Revert 137538 - Nacl sdk Nacl sdk automated test(method-testNaClSDK) of new installation process of…

chrome/test/functional/nacl_sdk.py

Index: chrome/test/functional/nacl_sdk.py
===================================================================
--- chrome/test/functional/nacl_sdk.py	(revision 137639)
+++ chrome/test/functional/nacl_sdk.py	(working copy)
@@ -1,5 +1,5 @@
 #!/usr/bin/env python
-# Copyright (c) 2012 The Chromium Authors. All rights reserved.
+# Copyright (c) 2011 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
@@ -12,14 +12,13 @@
 import logging
 import os
 import platform
-import re
 import shutil
 import subprocess
 import sys
+import tarfile
 import tempfile
 import urllib2
 import xml.dom.minidom
-import zipfile
 
 import pyauto_functional  # Must be imported before pyauto.
 import pyauto
@@ -30,15 +29,49 @@
   """Tests for the NaCl SDK."""
   _extracted_sdk_path = None
   _temp_dir = None
-  _pepper_versions = []
-  _updated_pepper_versions = []
-  _latest_updated_pepper_versions = []
   _settings = {
+      'release_win_sdk_url': 'http://commondatastorage.googleapis.com/'
+      'nativeclient-mirror/nacl/nacl_sdk/staging/naclsdk_win.exe',
+      'release_mac_sdk_url': 'http://commondatastorage.googleapis.com/'
+      'nativeclient-mirror/nacl/nacl_sdk/staging/naclsdk_mac.tgz',
+      'release_lin_sdk_url': 'http://commondatastorage.googleapis.com/'
+      'nativeclient-mirror/nacl/nacl_sdk/staging/naclsdk_linux.tgz',
+      'expected_md5_url': 'http://commondatastorage.googleapis.com/'
+      'nativeclient-mirror',
+      'release_win_expected_md5_key': 'nacl/nacl_sdk/staging/naclsdk_win.exe',
+      'release_mac_expected_md5_key': 'nacl/nacl_sdk/staging/naclsdk_mac.tgz',
+      'release_lin_expected_md5_key': 'nacl/nacl_sdk/staging/'
+      'naclsdk_linux.tgz',
       'post_sdk_download_url': 'http://code.google.com/chrome/nativeclient/'
-          'docs/download.html',
-      'post_sdk_zip': 'http://commondatastorage.googleapis.com/'
-          'nativeclient-mirror/nacl/nacl_sdk/nacl_sdk.zip',
+      'docs/download.html',
+      'post_win_sdk_url': 'http://commondatastorage.googleapis.com/'
+      'nativeclient-mirror/nacl/nacl_sdk/naclsdk_win.exe',
+      'post_mac_sdk_url': 'http://commondatastorage.googleapis.com/'
+      'nativeclient-mirror/nacl/nacl_sdk/naclsdk_mac.tgz',
+      'post_lin_sdk_url': 'http://commondatastorage.googleapis.com/'
+      'nativeclient-mirror/nacl/nacl_sdk/naclsdk_linux.tgz',
       'min_required_chrome_build': 14,
+      'gallery_examples': {
+           'life': 'http://nacl-gallery.appspot.com/life/life.html',
+           'hello_world': 'http://nacl-gallery.appspot.com/hello_world/'
+           'hello_world.html',
+           'pi_generator': 'http://nacl-gallery.appspot.com/pi_generator/'
+           'pi_generator.html',
+           'sine_synth': 'http://nacl-gallery.appspot.com/sine_synth/'
+           'sine_synth.html'
+      },
+      'prerelease_gallery': {
+           'hello_world': 'http://4.nacl-gallery.appspot.com/hello_world/'
+           'hello_world.html',
+           'hello_world_c': 'http://4.nacl-gallery.appspot.com/hello_world_c/'
+           'hello_world.html',
+           'life': 'http://4.nacl-gallery.appspot.com/life/life.html',
+           'pi_generator': 'http://4.nacl-gallery.appspot.com/pi_generator/'
+           'pi_generator.html',
+           'sine_synth': 'http://4.nacl-gallery.appspot.com/sine_synth/'
+           'sine_synth.html',
+           'geturl': 'http://4.nacl-gallery.appspot.com/geturl/geturl.html'
+      }
   }
 
   def tearDown(self):
@@ -51,17 +84,73 @@
       logging.info('System does not meet the requirements.')
       return
     self._extracted_sdk_path = tempfile.mkdtemp()
+
     self._VerifyDownloadLinks()
     self._VerifyNaClSDKInstaller()
-    self._VerifyInstall()
-    self._VerifyUpdate()
+    self._VerifyBuildStubProject()
     self._LaunchServerAndVerifyExamples()
+    self._VerifyRebuildExamples()
+    self._VerifySelldrAndNcval()
 
+  def testVerifyNaClSDKChecksum(self):
+    """Verify NaCl SDK Checksum."""
+    if not self._HasAllSystemRequirements():
+      logging.info('System does not meet the requirements.')
+      return
+
+    self._DownloadNaClSDK()
+
+    if pyauto.PyUITest.IsWin():
+      expected_md5_key = self._settings['release_win_expected_md5_key']
+      file_path = os.path.join(self._temp_dir, 'naclsdk_win.exe')
+    elif pyauto.PyUITest.IsMac():
+      expected_md5_key = self._settings['release_mac_expected_md5_key']
+      file_path = os.path.join(self._temp_dir, 'naclsdk_mac.tgz')
+    elif pyauto.PyUITest.IsLinux():
+      expected_md5_key = self._settings['release_lin_expected_md5_key']
+      file_path = os.path.join(self._temp_dir, 'naclsdk_linux.tgz')
+    else:
+      self.fail(msg='NaCl SDK does not support this OS.')
+
+    # Get expected MD5.
+    expected_md5_url = self._settings['expected_md5_url']
+    response = urllib2.urlopen(expected_md5_url)
+    dom = xml.dom.minidom.parseString(response.read())
+    dom_content = dom.getElementsByTagName('Contents')
+    expected_md5 = None
+    for con in dom_content:
+      if (self._GetXMLNodeData(con.getElementsByTagName('Key')[0].childNodes)
+          == expected_md5_key):
+        node = con.getElementsByTagName('ETag')[0].childNodes
+        expected_md5 = self._GetXMLNodeData(node).strip('"')
+    self.assertTrue(expected_md5,
+                    msg='Cannot get expected MD5 from %s.' % expected_md5_url)
+
+    md5 = hashlib.md5()
+    md5.update(open(file_path).read())
+    md5_sum = md5.hexdigest()
+    self.assertEqual(expected_md5, md5_sum,
+                     msg='Unexpected checksum. Expected: %s, got: %s'
+                     % (expected_md5, md5_sum))
+
+  def testVerifyNaClPlugin(self):
+    """Verify NaCl plugin."""
+    if not self._HasAllSystemRequirements():
+      logging.info('System does not meet the requirements.')
+      return
+    self._OpenExamplesAndStartTest(
+        self._settings['gallery_examples'])
+
+  def testVerifyPrereleaseGallery(self):
+    """Verify Pre-release gallery examples."""
+    if not self._HasAllSystemRequirements():
+      logging.info('System does not meet the requirements.')
+      return
+    self._OpenExamplesAndStartTest(
+        self._settings['prerelease_gallery'])
+
   def _VerifyDownloadLinks(self):
-    """Verify the download links.
-
-    Simply verify that NaCl download links exist in html page.
-    """
+    """Verify the download links."""
     html = None
     for i in xrange(3):
       try:
@@ -72,119 +161,267 @@
     self.assertTrue(html,
                     msg='Cannot open URL: %s' %
                     self._settings['post_sdk_download_url'])
-    sdk_url = self._settings['post_sdk_zip']
-    self.assertTrue(sdk_url in html,
-                    msg='Missing SDK download URL: %s' % sdk_url)
 
+    # Make sure the correct URL is under the correct label.
+    if pyauto.PyUITest.IsWin():
+      win_sdk_url = self._settings['post_win_sdk_url']
+      win_url_index = html.find(win_sdk_url)
+      self.assertTrue(win_url_index > -1,
+                      msg='Missing SDK download URL: %s' % win_sdk_url)
+      win_keyword_index = html.rfind('Windows', 0, win_url_index)
+      self.assertTrue(win_keyword_index > -1,
+                      msg='Misplaced download link: %s' % win_sdk_url)
+    elif pyauto.PyUITest.IsMac():
+      mac_sdk_url = self._settings['post_mac_sdk_url']
+      mac_url_index = html.find(mac_sdk_url)
+      self.assertTrue(mac_url_index > -1,
+                      msg='Missing SDK download URL: %s' % mac_sdk_url)
+      mac_keyword_index = html.rfind('Macintosh', 0, mac_url_index)
+      self.assertTrue(mac_keyword_index > -1,
+                      msg='Misplaced download link: %s' % mac_sdk_url)
+    elif pyauto.PyUITest.IsLinux():
+      lin_sdk_url = self._settings['post_lin_sdk_url']
+      lin_url_index = html.find(lin_sdk_url)
+      self.assertTrue(lin_url_index > -1,
+                      msg='Missing SDK download URL: %s' % lin_sdk_url)
+      lin_keyword_index = html.rfind('Linux', 0, lin_url_index)
+      self.assertTrue(lin_keyword_index > -1,
+                      msg='Misplaced download link: %s' % lin_sdk_url)
+    else:
+      self.fail(msg='NaCl SDK does not support this OS.')
+
   def _VerifyNaClSDKInstaller(self):
     """Verify NaCl SDK installer."""
     search_list = [
-        'sdk_cache/',
-        'sdk_tools/',
+        'build.scons',
+        'favicon.ico',
+        'geturl/',
+        'hello_world/',
+        'hello_world_c/',
+        'httpd.py',
+        'index.html',
+        'nacl_sdk_scons/',
+        'pi_generator/',
+        'scons',
+        'sine_synth/'
     ]
+
     mac_lin_additional_search_items = [
-        'naclsdk',
+        'sel_ldr_x86_32',
+        'sel_ldr_x86_64',
+        'ncval_x86_32',
+        'ncval_x86_64'
     ]
+
     win_additional_search_items = [
-        'naclsdk.bat'
+        'httpd.cmd',
+        'sel_ldr_x86_32.exe',
+        'sel_ldr_x86_64.exe',
+        'ncval_x86_32.exe',
+        'ncval_x86_64.exe'
     ]
+
     self._DownloadNaClSDK()
-    self._ExtractNaClSDK()
+
     if pyauto.PyUITest.IsWin():
-      self._SearchNaClSDKFile(
+      self._ExtractNaClSDK()
+      self._SearchNaClSDKFileWindows(
           search_list + win_additional_search_items)
-    elif pyauto.PyUITest.IsMac() or pyauto.PyUITest.IsLinux():
-      self._SearchNaClSDKFile(
-          search_list + mac_lin_additional_search_items)
+    elif pyauto.PyUITest.IsMac():
+      source_file = os.path.join(self._temp_dir, 'naclsdk_mac.tgz')
+      self._SearchNaClSDKTarFile(search_list + mac_lin_additional_search_items,
+                                 source_file)
+      self._ExtractNaClSDK()
+    elif pyauto.PyUITest.IsLinux():
+      source_file = os.path.join(self._temp_dir, 'naclsdk_linux.tgz')
+      self._SearchNaClSDKTarFile(search_list + mac_lin_additional_search_items,
+                                 source_file)
+      self._ExtractNaClSDK()
     else:
       self.fail(msg='NaCl SDK does not support this OS.')
 
-  def _VerifyInstall(self):
-    """Install NACL sdk."""
-    # Executing naclsdk(.bat) list
+  def _VerifyBuildStubProject(self):
+    """Build stub project."""
+    stub_project_files = [
+        'build.scons',
+        'scons'
+    ]
+    project_template_path = self._GetDirectoryPath('project_templates',
+                                                   self._extracted_sdk_path)
+    examples_path = self._GetDirectoryPath('examples',
+                                           self._extracted_sdk_path)
+    init_project_path = os.path.join(project_template_path, 'init_project.py')
+
+    # Build a C project.
+    subprocess.call(
+        ['python', init_project_path, '-n', 'hello_c', '-c', '-d',
+        examples_path], stdout=subprocess.PIPE)
+
+    hello_c_path = os.path.join(examples_path, 'hello_c')
+    for file in stub_project_files:
+        self.assertTrue(self._HasFile(file, hello_c_path),
+                        msg='Cannot build C stub project.')
+
+    # Build a C++ project.
+    subprocess.call(
+        ['python', init_project_path, '-n', 'hello_cc', '-d',
+        examples_path], stdout=subprocess.PIPE)
+
+    hello_cc_path = os.path.join(examples_path, 'hello_cc')
+    for file in stub_project_files:
+        self.assertTrue(self._HasFile(file, hello_cc_path),
+                        msg='Cannot build C++ stub project.')
+
+  def _LaunchServerAndVerifyExamples(self):
+    """Start local HTTP server and verify examples."""
+    # Make sure server is not open.
+    if self._IsURLAlive('http://localhost:5103'):
+      self._CloseHTTPServer()
+
+    # Start HTTP server.
+    examples_path = self._GetDirectoryPath('examples',
+                                           self._extracted_sdk_path)
     if pyauto.PyUITest.IsWin():
-      source_file = os.path.join(
-          self._extracted_sdk_path, 'nacl_sdk', 'naclsdk.bat')
-    elif pyauto.PyUITest.IsMac() or pyauto.PyUITest.IsLinux():
-      source_file = os.path.join(
-          self._extracted_sdk_path, 'nacl_sdk', 'naclsdk')
-      subprocess.call(['chmod', '-R', '755', self._extracted_sdk_path])
+      http_path = os.path.join(examples_path, 'httpd.cmd')
+      proc = subprocess.Popen([http_path], cwd=examples_path)
     else:
-      self.fail(msg='NaCl SDK does not support this OS.')
-    subprocess.Popen([source_file, 'list'],
-                     stdout=subprocess.PIPE,
-                     stderr=subprocess.PIPE).communicate()
+      http_path = os.path.join(examples_path, 'httpd.py')
+      proc = subprocess.Popen(['python', http_path], cwd=examples_path)
 
-  def _VerifyUpdate(self):
-    """Update NACL sdk"""
-    # Executing naclsdk(.bat) update
+    success = self.WaitUntil(
+        lambda: self._IsURLAlive('http://localhost:5103'),
+        timeout=30, retry_sleep=1, expect_retval=True)
+    self.assertTrue(success,
+                    msg='Cannot open HTTP server. %s' %
+                    self.GetActiveTabTitle())
+
+    examples = {
+        'hello_world_c': 'http://localhost:5103/hello_world_c/'
+        'hello_world.html',
+        'hello_world': 'http://localhost:5103/hello_world/hello_world.html',
+        'geturl': 'http://localhost:5103/geturl/geturl.html',
+        'pi_generator': 'http://localhost:5103/pi_generator/pi_generator.html',
+        'sine_synth': 'http://localhost:5103/sine_synth/sine_synth.html',
+    }
+    try:
+      self._OpenExamplesAndStartTest(examples)
+    finally:
+      self._CloseHTTPServer(proc)
+
+  def _VerifyRebuildExamples(self):
+    """Re-build the examples and verify they are as expected."""
+    example_dirs = [
+        'geturl',
+        'hello_world',
+        'hello_world_c',
+        'pi_generator',
+        'sine_synth'
+    ]
+    examples_path = self._GetDirectoryPath('examples',
+                                           self._extracted_sdk_path)
+
+    scons_path = os.path.join(examples_path, 'scons -c')
+    subprocess.call([scons_path], cwd=examples_path, shell=True)
+    for x in example_dirs:
+      ex_path = os.path.join(examples_path, x)
+      self.assertFalse(self._HasFile('*.nmf', ex_path),
+                       msg='Failed running scons -c.')
+
+    scons_path = os.path.join(examples_path, 'scons')
+    proc = subprocess.Popen([scons_path], cwd=examples_path,
+                            stdout=subprocess.PIPE, shell=True)
+    proc.communicate()
+
+    # Verify each example directory contains .nmf file.
+    for dir in example_dirs:
+      dir = os.path.join(examples_path, dir)
+      if not self._HasFile('*.nmf', dir):
+        self.fail(msg='Failed running scons.')
+
+    self._LaunchServerAndVerifyExamples()
+
+  def _VerifySelldrAndNcval(self):
+    """Verify sel_ldr and ncval."""
+    architecture = self._GetPlatformArchitecture()
+    scons_arg = None
     if pyauto.PyUITest.IsWin():
-      source_file = os.path.join(self._extracted_sdk_path, 'nacl_sdk',
-                                 'naclsdk.bat')
-    elif pyauto.PyUITest.IsMac() or pyauto.PyUITest.IsLinux():
-      source_file = os.path.join(self._extracted_sdk_path, 'nacl_sdk',
-                                 'naclsdk')
+      if architecture == '64bit':
+        scons_arg = 'test64'
+      else:
+        scons_arg = 'test32'
+    elif pyauto.PyUITest.IsMac():
+      scons_arg = 'test64'
+    elif pyauto.PyUITest.IsLinux():
+      scons_arg = 'test64'
+
+    examples_path = self._GetDirectoryPath('examples',
+                                           self._extracted_sdk_path)
+    scons_path = os.path.join(examples_path, 'scons ' + scons_arg)
+
+    # Build and run the unit test.
+    proc = subprocess.Popen([scons_path], stdout=subprocess.PIPE,
+                            shell=True, cwd=examples_path)
+    lines = proc.communicate()[0].splitlines()
+    test_ran = False
+
+    for line in lines:
+      if 'Check:' in line:
+        self.assertTrue('passed' in line,
+                        msg='Nacl-sel_ldr unit test failed.')
+        test_ran = True
+    self.assertTrue(test_ran,
+                    msg='Failed to build and run nacl-sel_ldr unit test.')
+
+    if architecture == '64bit':
+      self.assertTrue(
+          self._HasPathInTree('hello_world_x86_64.nexe',
+                              True, root=examples_path),
+          msg='Missing file: hello_world_x86_64.nexe.')
     else:
-      self.fail(msg='NaCl SDK does not support this OS.')
-    # Executing nacl_sdk(.bat) update to get the latest version.
-    updated_output = subprocess.Popen([source_file, 'update'],
-        stdout=subprocess.PIPE, stderr=subprocess.PIPE).communicate()[0]
-    self._updated_pepper_versions.extend(
-        re.findall('Updating bundle (pepper_[0-9]{2})', updated_output))
-    self._updated_pepper_versions = list(set(self._updated_pepper_versions))
-    self._updated_pepper_versions.sort(key=str.lower)
-    updated_pepper_versions_len = len(self._updated_pepper_versions)
-    self._latest_updated_pepper_versions = filter(
-        lambda x: x >= 'pepper_18', self._updated_pepper_versions)
+      self.assertTrue(
+          self._HasPathInTree('hello_world_x86_32.nexe',
+                              True, root=examples_path),
+          msg='Missing file: hello_world_x86_32.nexe.')
 
-  def _LaunchServerAndVerifyExamples(self):
-    """Start local HTTP server and verify examples."""
-    if self._ChromeAndPepperVersion(self._latest_updated_pepper_versions[0]):
-      examples_path = os.path.join(self._extracted_sdk_path, 'nacl_sdk',
-                                   self._latest_updated_pepper_versions[0],
-                                   'examples')
-      # Close server if it's already open.
-      if self._IsURLAlive('http://localhost:5103'):
-        self._CloseHTTPServer()
-      # Launch local http server.
-      proc = subprocess.Popen(['make RUN'], shell=True, cwd=examples_path)
-      self.WaitUntil(
-          lambda: self._IsURLAlive('http://localhost:5103'),
-          timeout=150, retry_sleep=1)
+    # Verify that a mismatch of sel_ldr and .nexe produces an error.
+    toolchain_path = self._GetDirectoryPath('toolchain',
+                                            self._extracted_sdk_path)
+    bin_path = self._GetDirectoryPath('bin', toolchain_path)
+    hello_world_path = self._GetDirectoryPath('hello_world', examples_path)
+    sel_32_path = os.path.join(bin_path, 'sel_ldr_x86_32')
+    sel_64_path = os.path.join(bin_path, 'sel_ldr_x86_64')
+    nexe_32_path = os.path.join(hello_world_path, 'hello_world_x86_32.nexe')
+    nexe_64_path = os.path.join(hello_world_path, 'hello_world_x86_64.nexe')
 
-      examples = {
-          'dynamic_library_open': 'http://localhost:5103/dlopen/dlopen.html',
-          'geturl': 'http://localhost:5103/geturl/geturl.html',
-          'input_events': 'http://localhost:5103/input_events'
-              '/input_events.html',
-          'load_progress':
-              'http://localhost:5103/load_progress/load_progress.html',
-          'multithreaded_input_events':
-          'http://localhost:5103/multithreaded_input_events'
-              '/mt_input_events.html',
-          'pi_generator':
-              'http://localhost:5103/pi_generator/pi_generator.html',
-          'sine_synth': 'http://localhost:5103/sine_synth/sine_synth.html',
-          'web_socket':
-              'http://localhost:5103/websocket/websocket.html',
-      }
-      try:
-        self._OpenExamplesAndStartTest(examples)
-      finally:
-        self._CloseHTTPServer(proc)
+    if architecture == '64bit':
+      success = self._RunProcessAndCheckOutput(
+          [sel_64_path, nexe_32_path], 'Error while loading')
+    else:
+      success = self._RunProcessAndCheckOutput(
+          [sel_32_path, nexe_64_path], 'Error while loading')
+    self.assertTrue(success,
+                    msg='Failed to verify sel_ldr and .nexe mismatch.')
 
+    # Run the appropriate ncval for the platform on the matching .nexe.
+    ncval_32_path = os.path.join(bin_path, 'ncval_x86_32')
+    ncval_64_path = os.path.join(bin_path, 'ncval_x86_64')
+
+    if architecture == '64bit':
+      success = self._RunProcessAndCheckOutput(
+          [ncval_64_path, nexe_64_path], 'is safe')
     else:
-      self.fail(msg='Pepper Version %s doesnot match the Chrome version %s.'
-          % (self._latest_updated_pepper_versions[0],
-          self.GetBrowserInfo()['properties']['ChromeVersion']))
+      success = self._RunProcessAndCheckOutput(
+          [ncval_32_path, nexe_32_path], 'is safe')
+    self.assertTrue(success, msg='Failed to verify ncval.')
 
-  def _ChromeAndPepperVersion(self, pepper_version='pepper_18'):
-    """Determine if chrome and pepper version matach"""
-    version_number = re.findall('pepper_([0-9]{2})', pepper_version)
-    browser_info = self.GetBrowserInfo()
-    chrome_version = browser_info['properties']['ChromeVersion']
-    chrome_build = int(chrome_version.split('.')[0])
-    return int(chrome_build) == int(version_number[0])
+    # Verify that a mismatch of ncval and .nexe produces an error.
+    if architecture == '64bit':
+      success = self._RunProcessAndCheckOutput(
+          [ncval_64_path, nexe_32_path], 'is safe', is_in=False)
+    else:
+      success = self._RunProcessAndCheckOutput(
+          [ncval_32_path, nexe_64_path], 'is safe', is_in=False)
+    self.assertTrue(success, msg='Failed to verify ncval and .nexe mismatch.')
 
   def _RemoveDownloadedTestFile(self):
     """Delete downloaded files and dirs from downloads directory."""
@@ -195,20 +432,43 @@
         shutil.rmtree(self._extracted_sdk_path, ignore_errors=True)
         return os.path.exists(self._extracted_sdk_path)
 
-      success = self.WaitUntil(_RemoveFile, retry_sleep=2,
-                               expect_retval=False)
+      success = self.WaitUntil(_RemoveFile, retry_sleep=2, expect_retval=False)
       self.assertTrue(success,
                       msg='Cannot remove %s' % self._extracted_sdk_path)
 
     if self._temp_dir:
       pyauto_utils.RemovePath(self._temp_dir)
 
+  def _RunProcessAndCheckOutput(self, args, look_for, is_in=True):
+    """Run process and look for string in output.
+
+    Args:
+      args: Argument strings to pass to subprocess.
+      look_for: The string to search in output.
+      is_in: True if checking if param look_for is in output.
+             False if checking if param look_for is not in output.
+
+    Returns:
+      True, if output contains parameter |look_for| and |is_in| is True, or
+      False otherwise.
+    """
+    proc = subprocess.Popen(args, stdout=subprocess.PIPE,
+                            stderr=subprocess.PIPE)
+    (stdout, stderr) = proc.communicate()
+    lines = (stdout + stderr).splitlines()
+    for line in lines:
+      if look_for in line:
+        return is_in
+    return not is_in
+
   def _OpenExamplesAndStartTest(self, examples):
     """Open each example and verify that it's working.
 
     Args:
       examples: A dict of name to url of examples.
     """
+    self._EnableNaClPlugin()
+
     # Open all examples.
     for name, url in examples.items():
       self.AppendTab(pyauto.GURL(url))
@@ -219,6 +479,17 @@
       self._VerifyAnExample(name, url)
     self._CheckForCrashes()
 
+    # Reload all examples.
+    for _ in range(2):
+      for tab_index in range(self.GetTabCount()):
+        self.GetBrowserWindow(0).GetTab(tab_index).Reload()
+    self._CheckForCrashes()
+
+    # Verify all examples are working.
+    for name, url in examples.items():
+      self._VerifyAnExample(name, url)
+    self._CheckForCrashes()
+
     # Close each tab, check for crashes and verify all open
     # examples operate correctly.
     tab_count = self.GetTabCount()
@@ -242,15 +513,12 @@
       url: A string url of the example.
     """
     available_example_tests = {
-        'dynamic_library_open': self._VerifyDynamicLibraryOpen,
-        'geturl': self._VerifyGetURLExample,
-        'input_events': self._VerifyInputEventsExample,
-        'load_progress': self._VerifyLoadProgressExample,
-        'multithreaded_input_events':
-            self._VerifyMultithreadedInputEventsExample,
-        'pi_generator': self._VerifyPiGeneratorExample,
-        'sine_synth': self._VerifySineSynthExample,
-        'web_socket':self._VerifyWebSocketExample,
+      'hello_world_c': self._VerifyHelloWorldExample,
+      'hello_world': self._VerifyHelloWorldExample,
+      'pi_generator': self._VerifyPiGeneratorExample,
+      'sine_synth': self._VerifySineSynthExample,
+      'geturl': self._VerifyGetURLExample,
+      'life': self._VerifyConwaysLifeExample
     }
 
     if not name in available_example_tests:
@@ -268,258 +536,269 @@
     if tab_index:
       available_example_tests[name](tab_index, name, url)
 
-  def _VerifyElementPresent(self, element_id, expected_value, tab_index, msg,
-                            attribute='innerHTML', timeout=150):
-    """Determine if dom element has the expected value.
+  def _VerifyHelloWorldExample(self, tab_index, name, url):
+    """Verify Hello World Example.
 
     Args:
-      element_id: Dom element's id.
-      expected_value: String to be matched against the Dom element.
-      tab_index: Tab index to work on.
-      attribute: Attribute to match |expected_value| against, if
-                 given. Defaults to 'innerHTML'.
-      timeout: The max timeout (in secs) for which to wait.
+      tab_index: Tab index integer that the example is on.
+      name: A string name of the example.
+      url: A string url of the example.
     """
-    js_code = """
-        var output = document.getElementById('%s').%s;
-        var result;
-        if (output.indexOf('%s') != -1)
-          result = 'pass';
-        else
-          result = 'fail';
-        window.domAutomationController.send(result);
-    """ % (element_id, attribute, expected_value)
     success = self.WaitUntil(
-        lambda: self.ExecuteJavascript(js_code, tab_index),
-        timeout=timeout, expect_retval='pass')
-    self.assertTrue(success, msg=msg)
+        lambda: self.GetDOMValue(
+                    'document.getElementById("statusField").innerHTML',
+                    tab_index),
+        timeout=60, expect_retval='SUCCESS')
+    self.assertTrue(success, msg='Example %s failed. URL: %s' % (name, url))
 
-  def _CreateJSToSimulateMouseclick(self):
-    """Create javascript to simulate mouse click event."""
     js_code = """
-        var rightClick = document.createEvent('MouseEvents');
-        rightClick.initMouseEvent(
-          'mousedown', true, true, document,
-          1, 32, 121, 10, 100,
-          false, false, false, false,
-          2, document.getElementById('event_module')
-        );
-        document.getElementById('event_module').dispatchEvent(rightClick);
-        window.domAutomationController.send('done');
+      window.alert = function(e) {
+        window.domAutomationController.send(String(e));
+      }
+      window.domAutomationController.send("done");
     """
-    return js_code
+    self.ExecuteJavascript(js_code, tab_index)
 
-  def _VerifyInputEventsExample(self, tab_index, name, url):
-    """Verify Input Events Example.
+    result = self.ExecuteJavascript('document.helloForm.elements[1].click();',
+                                    tab_index)
+    self.assertEqual(result, '42',
+                     msg='Example %s failed. URL: %s' % (name, url))
 
+    result = self.ExecuteJavascript('document.helloForm.elements[2].click();',
+                                    tab_index)
+    self.assertEqual(result, 'dlrow olleH',
+                     msg='Example %s failed. URL: %s' % (name, url))
+
+  def _VerifyPiGeneratorExample(self, tab_index, name, url):
+    """Verify Pi Generator Example.
+
     Args:
       tab_index: Tab index integer that the example is on.
       name: A string name of the example.
       url: A string url of the example.
     """
-    success = self._VerifyElementPresent('eventString', 'DidChangeView',
-        tab_index, msg='Example %s failed. URL: %s' % (name, url))
-
-    # Simulate mouse click on event module.
-    js_code = self._CreateJSToSimulateMouseclick()
-    self.ExecuteJavascript(js_code, tab_index)
-
-    # Check if 'eventString' has handled above mouse click.
     success = self.WaitUntil(
-        lambda: re.search('DidHandleInputEvent', self.GetDOMValue(
-          'document.getElementById("eventString").innerHTML',
-          tab_index)).group(), expect_retval='DidHandleInputEvent')
+        lambda: self.GetDOMValue('document.form.pi.value', 0, tab_index)[0:3],
+        timeout=120, expect_retval='3.1')
     self.assertTrue(success, msg='Example %s failed. URL: %s' % (name, url))
 
-  def _VerifyMultithreadedInputEventsExample(self, tab_index, name, url):
-    """Verify Input Events Example.
+    # Get top corner of Pi image.
+    js_code = """
+      var obj = document.getElementById('piGenerator');
+      var curleft = curtop = 0;
+      do {
+          curleft += obj.offsetLeft;
+          curtop += obj.offsetTop;
+      } while (obj = obj.offsetParent);
+      window.domAutomationController.send(curleft + ", " + curtop);
+    """
+    result = self.ExecuteJavascript(js_code, tab_index)
+    result_split = result.split(', ')
+    x = int(result_split[0])
+    y = int(result_split[1])
+    window = self.GetBrowserInfo()['windows'][0]
+    window_to_content_x = 2
+    window_to_content_y = 80
+    pi_image_x = x + window['x'] + window_to_content_x
+    pi_image_y = y + window['y'] + window_to_content_y
 
+    if self._IsGetPixelSupported():
+      is_animating = self._IsColorChanging(pi_image_x, pi_image_y, 50, 50)
+      self.assertTrue(is_animating,
+                      msg='Example %s failed. URL: %s' % (name, url))
+
+  def _VerifySineSynthExample(self, tab_index, name, url):
+    """Verify Sine Wave Synthesizer Example.
+
     Args:
       tab_index: Tab index integer that the example is on.
       name: A string name of the example.
       url: A string url of the example.
     """
     success = self.WaitUntil(
-        lambda: bool(self.GetDOMValue(
-          'document.getElementById("eventString").innerHTML',
-          tab_index).find('DidChangeView') + 1))
-
+        lambda: self.GetDOMValue(
+                    'document.getElementById("frequency_field").value',
+                    tab_index),
+        timeout=30, expect_retval='440')
     self.assertTrue(success, msg='Example %s failed. URL: %s' % (name, url))
 
-    # Simulate mouse click on event module.
-    js_code = self._CreateJSToSimulateMouseclick()
-    self.ExecuteJavascript(js_code, tab_index)
+    self.ExecuteJavascript(
+        'document.body.getElementsByTagName("button")[0].click();'
+        'window.domAutomationController.send("done")',
+        tab_index)
 
-    # Check if above mouse click is handled.
-    success = self._VerifyElementPresent('eventString', 'Mouse event',
-        tab_index, msg='Example %s failed. URL: %s' % (name, url))
+    # TODO(chrisphan): Verify sound.
 
-    # Kill worker thread and queue
-    js_code = """
-      document.getElementsByTagName('button')[0].click();
-      window.domAutomationController.send('done');
-    """
-    self.ExecuteJavascript(js_code, tab_index)
+  def _VerifyGetURLExample(self, tab_index, name, url):
+    """Verify GetURL Example.
 
-    # Check if main thread has cancelled queue.
-    success = self._VerifyElementPresent('eventString', 'Received cancel',
-        tab_index, msg='Example %s failed. URL: %s' % (name, url))
-
-    # Simulate mouse click on event module.
-    js_code = self._CreateJSToSimulateMouseclick()
-    self.ExecuteJavascript(js_code, tab_index)
-
-    # Check if above mouse click is not handled after killing worker thread.
-    def _CheckMouseClickEventStatus():
-      return self.GetDOMValue(
-        'document.getElementById("eventString").innerHTML',
-        tab_index).find('Mouse event', self.GetDOMValue(
-        'document.getElementById("eventString").innerHTML', tab_index).find(
-        'Received cancel'))
-
-    success = self.WaitUntil(_CheckMouseClickEventStatus, expect_retval=-1)
-    self.assertTrue(success, msg='Example %s failed. URL: %s' % (name, url))
-
-  def _VerifyWebSocketExample(self, tab_index, name, url):
-    """Verify Web Socket Open Example.
-
     Args:
       tab_index: Tab index integer that the example is on.
       name: A string name of the example.
       url: A string url of the example.
     """
-    # Check if example is loaded.
     success = self.WaitUntil(
         lambda: self.GetDOMValue(
-            'document.getElementById("statusField").innerHTML', tab_index),
-            expect_retval='SUCCESS')
+                    'document.getElementById("status_field").innerHTML',
+                    tab_index),
+        timeout=60, expect_retval='SUCCESS')
     self.assertTrue(success, msg='Example %s failed. URL: %s' % (name, url))
 
-    # Simulate clicking on Connect button to establish a connection.
-    js_code = """
-      document.getElementsByTagName('input')[1].click();
-      window.domAutomationController.send('done');
-    """
-    self.ExecuteJavascript(js_code, tab_index)
+    self.ExecuteJavascript(
+        'document.geturl_form.elements[0].click();'
+        'window.domAutomationController.send("done")',
+        tab_index)
 
-    # Check if connected
-    success = self._VerifyElementPresent('log', 'connected', tab_index,
-        msg='Example %s failed. URL: %s' %(name, url), attribute='value')
-
-    # Simulate clicking on Send button to send text message in log.
     js_code = """
-      document.getElementsByTagName('input')[3].click();
-      window.domAutomationController.send('done');
+      var output = document.getElementById("general_output").innerHTML;
+      var result;
+      if (output.indexOf("test passed") != -1)
+        result = "pass";
+      else
+        result = "fail";
+      window.domAutomationController.send(result);
     """
-    self.ExecuteJavascript(js_code, tab_index)
     success = self.WaitUntil(
-        lambda: bool(re.search('send:', self.GetDOMValue(
-            'document.getElementById("log").value', tab_index))))
+        lambda: self.ExecuteJavascript(js_code, tab_index),
+        timeout=30, expect_retval='pass')
     self.assertTrue(success, msg='Example %s failed. URL: %s' % (name, url))
 
-  def _VerifyDynamicLibraryOpen(self, tab_index, name, url):
-    """Verify Dynamic Library Open Example.
+  def _VerifyConwaysLifeExample(self, tab_index, name, url):
+    """Verify Conway's Life Example.
 
     Args:
       tab_index: Tab index integer that the example is on.
       name: A string name of the example.
       url: A string url of the example.
     """
-    # Check if example is loaded.
-    success = self._VerifyElementPresent('consolec', 'Eightball loaded',
-        tab_index, msg='Example %s failed. URL: %s' % (name, url))
+    window = self.GetBrowserInfo()['windows'][0]
+    window_to_content_x = 2
+    window_to_content_y = 80
+    x = window['x'] + window_to_content_x
+    y = window['y'] + window_to_content_y
+    offset_pixel = 100
+    if self._IsGetPixelSupported():
+      success = self.WaitUntil(
+          lambda: self._GetPixel(x + offset_pixel, y + offset_pixel),
+          timeout=30, expect_retval=16777215)
+      self.assertTrue(success, msg='Example %s failed. URL: %s' % (name, url))
 
-    # Simulate clicking on ASK button and check answer log for desired answer.
-    js_code = """
-      document.getElementsByTagName('input')[1].click();
-      window.domAutomationController.send('done');
+  def _GetXMLNodeData(self, nodelist):
+      rc = []
+      for node in nodelist:
+          if node.nodeType == node.TEXT_NODE:
+              rc.append(node.data)
+      return ''.join(rc)
+
+  def _IsColorChanging(self, x, y, width, height):
+    """Check screen for anything that is moving.
+
+    Args:
+      x: X coordinate on the screen.
+      y: Y coordinate on the screen.
+      width: Width of the area to scan.
+      height: Height of the area to scan.
+
+    Returns:
+      True, if pixel color in area is changing, or
+      False otherwise.
     """
-    self.ExecuteJavascript(js_code, tab_index)
-    def _CheckAnswerLog():
-      return bool(re.search(r'NO|YES|42|MAYBE NOT|DEFINITELY|'
-        'ASK ME TOMORROW|MAYBE|PARTLY CLOUDY',
-        self.GetDOMValue('document.getElementById("answerlog").innerHTML',
-        tab_index)))
+    color_a = self._GetAreaPixelColor(x, y, width, height)
+    def _HasColorChanged():
+      color_b = self._GetAreaPixelColor(x, y, width, height)
+      return color_a != color_b
 
-    success = self.WaitUntil(_CheckAnswerLog)
-    self.assertTrue(success, msg='Example %s failed. URL: %s' % (name, url))
+    return self.WaitUntil(_HasColorChanged, timeout=6,
+                          retry_sleep=2, expect_retval=True)
 
-  def _VerifyLoadProgressExample(self, tab_index, name, url):
-    """Verify Dynamic Library Open Example.
+  def _IsGetPixelSupported(self):
+    """Check if get pixel is supported.
 
+    Returns:
+      True, if get pixel is supported, or
+      False otherwise.
+    """
+    return pyauto.PyUITest.IsWin()
+
+  def _GetAreaPixelColor(self, x, y, width, height):
+    """Get an area of pixel color and return a list of color code values.
+
     Args:
-      tab_index: Tab index integer that the example is on.
-      name: A string name of the example.
-      url: A string url of the example.
+      x: X coordinate on the screen.
+      y: Y coordinate on the screen.
+      width: Width of the area to scan.
+      height: Height of the area to scan.
+
+    Returns:
+      A list containing color codes.
     """
-    # Check if example loads and displays loading progress.
-    success = self.WaitUntil(
-        lambda: self.GetDOMValue(
-        'document.getElementById("status_field").innerHTML', tab_index),
-        timeout=150, expect_retval='SUCCESS')
-    self.assertTrue(success, msg='Example %s failed. URL: %s' % (name, url))
+    if pyauto.PyUITest.IsMac():
+      pass  # TODO(chrisphan): Do Mac.
+    elif pyauto.PyUITest.IsWin():
+      return self._GetAreaPixelColorWin(x, y, width, height)
+    elif pyauto.PyUITest.IsLinux():
+      pass  # TODO(chrisphan): Do Linux.
+    return None
 
-    def _CheckLoadProgressStatus():
-      return re.search(
-          r'(loadstart).+(progress:).+(load).+(loadend).+(lastError:)',
-          self.GetDOMValue(
-          'document.getElementById("event_log_field").innerHTML', tab_index))
-    success = self.WaitUntil(_CheckLoadProgressStatus)
-    self.assertTrue(success, msg='Example %s failed. URL: %s' % (name, url))
+  def _GetAreaPixelColorWin(self, x, y, width, height):
+    """Get an area of pixel color for Windows and return a list.
 
-  def _VerifyPiGeneratorExample(self, tab_index, name, url):
-    """Verify Pi Generator Example.
+    Args:
+      x: X coordinate on the screen.
+      y: Y coordinate on the screen.
+      width: Width of the area to scan.
+      height: Height of the area to scan.
 
+    Returns:
+      A list containing color codes.
+    """
+    colors = []
+    hdc = ctypes.windll.user32.GetDC(0)
+    for x_pos in xrange(x, x + width, 1):
+      for y_pos in xrange(y, y + height, 1):
+        color = ctypes.windll.gdi32.GetPixel(hdc, x_pos, y_pos)
+        colors.append(color)
+    return colors
+
+  def _GetPixel(self, x, y):
+    """Get pixel color at coordinate x and y.
+
     Args:
-      tab_index: Tab index integer that the example is on.
-      name: A string name of the example.
-      url: A string url of the example.
+      x: X coordinate on the screen.
+      y: Y coordinate on the screen.
+
+    Returns:
+      An integer color code.
     """
-    success = self.WaitUntil(
-        lambda: self.GetDOMValue('document.form.pi.value', tab_index)[0:3],
-        expect_retval='3.1')
-    self.assertTrue(success, msg='Example %s failed. URL: %s' % (name, url))
+    if pyauto.PyUITest.IsMac():
+      pass  # TODO(chrisphan): Do Mac.
+    elif pyauto.PyUITest.IsWin():
+      return self._GetPixelWin(x, y)
+    elif pyauto.PyUITest.IsLinux():
+      pass  # TODO(chrisphan): Do Linux.
+    return None
 
-  def _VerifySineSynthExample(self, tab_index, name, url):
-    """Verify Sine Wave Synthesizer Example.
+  def _GetPixelWin(self, x, y):
+    """Get pixel color at coordinate x and y for Windows
 
     Args:
-      tab_index: Tab index integer that the example is on.
-      name: A string name of the example.
-      url: A string url of the example.
+      x: X coordinate on the screen.
+      y: Y coordinate on the screen.
+
+    Returns:
+      An integer color code.
     """
-    success = self.WaitUntil(
-        lambda: self.GetDOMValue(
-                    'document.getElementById("frequency_field").value',
-                    tab_index),timeout=150, expect_retval='440')
-    self.assertTrue(success, msg='Example %s failed. URL: %s' % (name, url))
-    self.ExecuteJavascript(
-        'document.body.getElementsByTagName("button")[0].click();'
-        'window.domAutomationController.send("done")',
-        tab_index)
+    hdc = ctypes.windll.user32.GetDC(0)
+    color = ctypes.windll.gdi32.GetPixel(hdc, x, y)
+    return color
 
-  def _VerifyGetURLExample(self, tab_index, name, url):
-    """Verify GetURL Example.
+  def _CheckForCrashes(self, last_action=None, last_action_param=None):
+    """Check for any browser/tab crashes and hangs.
 
     Args:
-      tab_index: Tab index integer that the example is on.
-      name: A string name of the example.
-      url: A string url of the example.
+      last_action: Specify action taken before checking for crashes.
+      last_action_param: Parameter for last action.
     """
-    success = self.WaitUntil(
-        lambda: self.GetDOMValue(
-                    'document.getElementById("status_field").innerHTML',
-                    tab_index), timeout=150, expect_retval='SUCCESS')
-    self.assertTrue(success, msg='Example %s failed. URL: %s' % (name, url))
-    self.ExecuteJavascript(
-        'document.geturl_form.elements[0].click();'
-        'window.domAutomationController.send("done")',
-        tab_index)
-    success = self._VerifyElementPresent('general_output', 'test passed',
-        tab_index, msg='Example %s failed. URL: %s' % (name, url))
-
-  def _CheckForCrashes(self):
-    """Check for any browser/tab crashes and hangs."""
     self.assertTrue(self.GetBrowserWindowCount(),
                     msg='Browser crashed, no window is open.')
 
@@ -539,9 +818,22 @@
         if not self.GetDOMValue('document.body.innerHTML', tab['index']):
           self.fail(msg='Tab crashed on %s' % tab['url'])
 
+    # TODO(chrisphan): Check for tab hangs and browser hangs.
+    # TODO(chrisphan): Handle specific action: close browser, close tab.
+    if last_action == 'close tab':
+      pass
+    elif last_action == 'close browser':
+      pass
+    else:
+      pass
+
   def _GetPlatformArchitecture(self):
     """Get platform architecture.
 
+    Args:
+      last_action: Last action taken before checking for crashes.
+      last_action_param: Parameter for last action.
+
     Returns:
       A string representing the platform architecture.
     """
@@ -557,6 +849,19 @@
         return '32bit'
     return '32bit'
 
+  def _HasFile(self, pattern, root=os.curdir):
+    """Check if a file matching the specified pattern exists in a directory.
+
+    Args:
+      pattern: Pattern of file name.
+      root: Directory to start looking.
+
+    Returns:
+      True, if root contains the file name pattern, or
+      False otherwise.
+    """
+    return len(glob.glob(os.path.join(root, pattern)))
+
   def _HasPathInTree(self, pattern, is_file, root=os.curdir):
     """Recursively checks if a file/directory matching a pattern exists.
 
@@ -578,6 +883,22 @@
           return True
     return False
 
+  def _GetDirectoryPath(self, pattern, root=os.curdir):
+    """Get the path of a directory in another directory.
+
+    Args:
+      pattern: Pattern of directory name.
+      root: Directory to start looking.
+
+    Returns:
+      A string of the path.
+    """
+    for path, dirs, files in os.walk(os.path.abspath(root)):
+        result = fnmatch.filter(dirs, pattern)
+        if result:
+            return os.path.join(path, result[0])
+    return None
+
   def _HasAllSystemRequirements(self):
     """Verify NaCl SDK installation system requirements.
 
@@ -614,8 +935,17 @@
   def _DownloadNaClSDK(self):
     """Download NaCl SDK."""
     self._temp_dir = tempfile.mkdtemp()
-    dl_file = urllib2.urlopen(self._settings['post_sdk_zip'])
-    file_path = os.path.join(self._temp_dir, 'nacl_sdk.zip')
+    if pyauto.PyUITest.IsWin():
+      dl_file = urllib2.urlopen(self._settings['release_win_sdk_url'])
+      file_path = os.path.join(self._temp_dir, 'naclsdk_win.exe')
+    elif pyauto.PyUITest.IsMac():
+      dl_file = urllib2.urlopen(self._settings['release_mac_sdk_url'])
+      file_path = os.path.join(self._temp_dir, 'naclsdk_mac.tgz')
+    elif pyauto.PyUITest.IsLinux():
+      dl_file = urllib2.urlopen(self._settings['release_lin_sdk_url'])
+      file_path = os.path.join(self._temp_dir, 'naclsdk_linux.tgz')
+    else:
+      self.fail(msg='NaCl SDK does not support this OS.')
 
     try:
       f = open(file_path, 'wb')
@@ -627,12 +957,24 @@
 
   def _ExtractNaClSDK(self):
     """Extract NaCl SDK."""
-    source_file = os.path.join(self._temp_dir, 'nacl_sdk.zip')
-    if zipfile.is_zipfile(source_file):
-      zip = zipfile.ZipFile(source_file, 'r')
-      zip.extractall(self._extracted_sdk_path)
+    if pyauto.PyUITest.IsWin():
+      source_file = os.path.join(self._temp_dir, 'naclsdk_win.exe')
+      proc = subprocess.Popen([source_file, '/S', '/D=' +
+                              self._extracted_sdk_path],
+                              stdout=subprocess.PIPE)
+      proc.communicate()
+      if not os.listdir(self._extracted_sdk_path):
+        self.fail(msg='Failed to extract NaCl SDK.')
+    elif pyauto.PyUITest.IsMac():
+      source_file = os.path.join(self._temp_dir, 'naclsdk_mac.tgz')
+      tar = tarfile.open(source_file, 'r')
+      tar.extractall(self._extracted_sdk_path)
+    elif pyauto.PyUITest.IsLinux():
+      source_file = os.path.join(self._temp_dir, 'naclsdk_linux.tgz')
+      tar = tarfile.open(source_file, 'r')
+      tar.extractall(self._extracted_sdk_path)
     else:
-      self.fail(msg='%s is not a valid zip file' % source_file)
+      self.fail(msg='NaCl SDK does not support this OS.')
 
   def _IsURLAlive(self, url):
     """Test if URL is alive."""
@@ -659,7 +1001,7 @@
     urllib2.urlopen('http://localhost:5103?quit=1')
     success = self.WaitUntil(
         lambda: self._IsURLAlive('http://localhost:5103'),
-        retry_sleep=1, expect_retval=False)
+        timeout=30, retry_sleep=1, expect_retval=False)
     if not success:
       if not proc:
         self.fail(msg='Failed to close HTTP server.')
@@ -668,9 +1010,38 @@
           try:
             proc.kill()
           except:
-            self.fail(msg='Failed to close HTTP server.')
+            self.fail(msg='Failed to close HTTP server')
 
-  def _SearchNaClSDKFile(self, search_list):
+  def _SearchNaClSDKTarFile(self, search_list, source_file):
+    """Search NaCl SDK tar file for example files and directories.
+
+    Args:
+      search_list: A list of strings, representing file and
+                   directory names for which to search.
+      source_file: The string name of an NaCl SDK tar file.
+    """
+    tar = tarfile.open(source_file, 'r')
+
+    # Look for files and directories in examples.
+    files = copy.deepcopy(search_list)
+    for tar_info in tar:
+      file_name = tar_info.name
+      if tar_info.isdir() and not file_name.endswith('/'):
+        file_name = file_name + '/'
+
+      for name in files:
+        if file_name.find('examples/' + name):
+          files.remove(name)
+      if not files:
+        break
+
+    tar.close()
+
+    self.assertEqual(len(files), 0,
+                     msg='Missing files or directories: %s' %
+                         ', '.join(map(str, files)))
+
+  def _SearchNaClSDKFileWindows(self, search_list):
     """Search NaCl SDK file for example files and directories in Windows.
 
     Args:
@@ -688,18 +1059,28 @@
                      msg='Missing files or directories: %s' %
                          ', '.join(map(str, missing_items)))
 
-  def ExtraChromeFlags(self):
-    """Ensures Nacl is enabled.
+  def _EnableNaClPlugin(self):
+    """Enable NaCl plugin."""
+    nacl_plugin = (self.GetPluginsInfo().PluginForName('Chrome NaCl') or
+        self.GetPluginsInfo().PluginForName('Native Client'))
+    if not nacl_plugin:
+      self.fail(msg='No NaCl plugin found.')
+    self.EnablePlugin(nacl_plugin[0]['path'])
 
-    Returns:
-      A list of extra flags to pass to Chrome when it is launched.
+    self.NavigateToURL('about:flags')
+
+    js_code = """
+      chrome.send('enableFlagsExperiment', ['enable-nacl', 'true']);
+      requestFlagsExperimentsData();
+      window.domAutomationController.send('done');
     """
-    extra_chrome_flags = [
-        '--enable-nacl',
-        '--enable-nacl-exception-handling',
-        '--nacl-gdb',
-      ]
-    return pyauto.PyUITest.ExtraChromeFlags(self) + extra_chrome_flags
+    self.ExecuteJavascript(js_code)
+    self.RestartBrowser(False)
 
+    self.NavigateToURL('about://version')
+    self.assertEqual(self.FindInPage('--enable-nacl')['match_count'], 1,
+                     msg='Missing expected Chrome flag --enable-nacl.')
+
+
 if __name__ == '__main__':
   pyauto_functional.Main()