[Android] Adds python option for EMMA coverage

build/android/pylib/constants.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.
 
 """Defines a set of constants shared by test runners and other scripts."""
 
 import os
 import subprocess
 import sys
 
 
 DIR_SOURCE_ROOT = os.path.abspath(os.path.join(os.path.dirname(__file__),
                                                os.pardir, os.pardir, os.pardir))
 ISOLATE_DEPS_DIR = os.path.join(DIR_SOURCE_ROOT, 'isolate_deps_dir')
 EMULATOR_SDK_ROOT = os.path.abspath(os.path.join(DIR_SOURCE_ROOT, os.pardir,
                                                  os.pardir))
-
 CHROME_PACKAGE = 'com.google.android.apps.chrome'
 CHROME_ACTIVITY = 'com.google.android.apps.chrome.Main'
 CHROME_DEVTOOLS_SOCKET = 'chrome_devtools_remote'
 
 CHROME_TESTS_PACKAGE = 'com.google.android.apps.chrome.tests'
 
 LEGACY_BROWSER_PACKAGE = 'com.google.android.browser'
 LEGACY_BROWSER_ACTIVITY = 'com.android.browser.BrowserActivity'
 
 CONTENT_SHELL_PACKAGE = 'org.chromium.content_shell_apk'
@@ skipping 78 matching lines @@
   except OSError:
     print >> sys.stderr, 'No adb found in $PATH, fallback to checked in binary.'
     return os.path.join(ANDROID_SDK_ROOT, 'platform-tools', 'adb')
 
 
 ADB_PATH = _GetADBPath()
 
 # Exit codes
 ERROR_EXIT_CODE = 1
 WARNING_EXIT_CODE = 88