Add test case for WebRTC patch on Chromium trybots.

scripts/slave/recipes/chromium_trybot.py

 # Copyright 2013 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.
 
 import collections
 
 from recipe_engine.types import freeze
 
 DEPS = [
   'depot_tools/bot_update',
@@ skipping 734 matching lines @@
 
   yield (
     api.test('use_v8_patch_on_chromium_trybot') +
     props(buildername='win_chromium_rel_ng',
           mastername='tryserver.chromium.win',
           patch_project='v8') +
     api.platform.name('win')
   )
 
   yield (
+    api.test('use_webrtc_patch_on_chromium_trybot') +
+    props(buildername='win_chromium_rel_ng',
+          mastername='tryserver.chromium.win',
+          patch_project='webrtc') +
+    api.platform.name('win')
+  )
+
+  yield (
     api.test('use_skia_patch_on_chromium_trybot') +
     props(buildername='win_chromium_rel_ng',
           mastername='tryserver.chromium.win',
           patch_project='skia') +
     api.platform.name('win')
   )
 
   # Tests that we run nothing if analyze said we didn't have to run anything
   # and there were no source file changes.
   yield (
@@ skipping 130 matching lines @@
     props(mastername='tryserver.v8',
           buildername='v8_linux_blink_rel',
           patch_project='v8') +
     api.platform.name('linux') +
     suppress_analyze(more_exclusions=['v8/f.*']) +
     api.override_step_data('webkit_tests (with patch)',
         api.test_utils.canned_test_output(passing=False)) +
     api.override_step_data('webkit_tests (without patch)',
         api.test_utils.canned_test_output(passing=True, minimal=True))
   )