[telemetry] Change many relative paths to use util.Get*Dir().

tools/telemetry/telemetry/core/chrome/android_browser_finder.py

 # Copyright (c) 2012 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.
 """Finds android browsers that can be controlled by telemetry."""
 
 import os
 import logging as real_logging
 import re
 import subprocess
 import sys
 
 from telemetry.core import browser
 from telemetry.core import possible_browser
 from telemetry.core import profile_types
+from telemetry.core import util
 from telemetry.core.chrome import adb_commands
 from telemetry.core.chrome import android_browser_backend
 from telemetry.core.platform import android_platform_backend
 
 CHROME_PACKAGE_NAMES = {
   'android-chrome': 'com.google.android.apps.chrome',
   'android-chrome-beta': 'com.chrome.beta',
   'android-chrome-dev': 'com.google.android.apps.chrome_dev',
   'android-jb-system-chrome': 'com.android.chrome'
 }
@@ skipping 59 matching lines @@
                                 stdin=devnull)
         stdout, _ = proc.communicate()
         if re.search(re.escape('????????????\tno permissions'), stdout) != None:
           logging.warn(
               ('adb devices reported a permissions error. Consider '
                'restarting adb as root:'))
           logging.warn('  adb kill-server')
           logging.warn('  sudo `which adb` devices\n\n')
         adb_works = True
     except OSError:
-      platform_tools_path = os.path.join(
-          os.path.dirname(__file__), '..', '..', '..', '..', '..'
+      platform_tools_path = os.path.join(util.GetChromiumSrcDir(),
           'third_party', 'android_tools', 'sdk', 'platform-tools')
       if (sys.platform.startswith('linux') and
           os.path.exists(os.path.join(platform_tools_path, 'adb'))):
         os.environ['PATH'] = os.pathsep.join([platform_tools_path,
                                               os.environ['PATH']])
         adb_works = True
       else:
         adb_works = False
   if adb_works and sys.platform.startswith('linux'):
     # Workaround for crbug.com/268450
@@ skipping 72 matching lines @@
   # but make it accessible to the device.
   if len(possible_browsers) and not adb_commands.HasForwarder():
     logging.warn('telemetry detected an android device. However,')
     logging.warn('Chrome\'s port-forwarder app is not available.')
     logging.warn('To build:')
     logging.warn('  ninja -C out/Release forwarder2 md5sum')
     logging.warn('')
     logging.warn('')
     return []
   return possible_browsers