Adds Cast on Android as a valid tracing configuration (chromecast_shell).

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."""
 # pylint: disable=W0212
 
 import collections
 import logging
 import os
@@ skipping 49 matching lines @@
         'com.google.android.apps.chrome.Main',
         '/data/local/chrome-command-line',
         'chrome_devtools_remote',
         None),
     'legacy_browser': PackageInfo(
         'com.google.android.browser',
         'com.android.browser.BrowserActivity',
         None,
         None,
         None),
+    'chromecast_shell': PackageInfo(
+        'com.google.android.apps.mediashell',
+        'com.google.android.apps.mediashell.MediaShellActivity',
+        '/data/local/tmp/castshell-command-line',
+        None,
+        None),
     'content_shell': PackageInfo(
         'org.chromium.content_shell_apk',
         'org.chromium.content_shell_apk.ContentShellActivity',
         '/data/local/tmp/content-shell-command-line',
         None,
         'org.chromium.content_shell_apk.tests'),
     'chrome_shell': PackageInfo(
         'org.chromium.chrome.shell',
         'org.chromium.chrome.shell.ChromeShellActivity',
         '/data/local/tmp/chrome-shell-command-line',
@@ skipping 129 matching lines @@
       subprocess.call(['adb', 'version'], stdout=devnull, stderr=devnull)
     return 'adb'
   except OSError:
     logging.debug('No adb found in $PATH, fallback to checked in binary.')
     return os.path.join(ANDROID_SDK_ROOT, 'platform-tools', 'adb')
 
 
 # Exit codes
 ERROR_EXIT_CODE = 1
 WARNING_EXIT_CODE = 88