Add WebRTC test configurations for Android testing.

build/android/buildbot/bb_device_steps.py

Index: build/android/buildbot/bb_device_steps.py
diff --git a/build/android/buildbot/bb_device_steps.py b/build/android/buildbot/bb_device_steps.py
index 8bc537f0b893476dea35311ff731c0322503c80c..32438ae8fc47479a96b2d6d96e35ae133528cfc6 100755
--- a/build/android/buildbot/bb_device_steps.py
+++ b/build/android/buildbot/bb_device_steps.py
@@ -64,7 +64,8 @@ INSTRUMENTATION_TESTS = dict((suite.name, suite) for suite in [
       'webview:android_webview/test/data/device_files'),
     ])
 
-VALID_TESTS = set(['chromedriver', 'ui', 'unit', 'webkit', 'webkit_layout'])
+VALID_TESTS = set(['chromedriver', 'ui', 'unit', 'webkit', 'webkit_layout',
+                   'webrtc'])
 
 RunCmd = bb_utils.RunCmd
 
@@ -277,13 +278,18 @@ def RunWebkitTests(options):
   RunWebkitLint(options.target)
 
 
+def RunWebRTCTests(options):
+  RunTestSuites(options, gtest_config.WEBRTC_TEST_SUITES)
+
+
 def GetTestStepCmds():
   return [
       ('chromedriver', RunChromeDriverTests),
       ('unit', RunUnitTests),
       ('ui', RunInstrumentationTests),
       ('webkit', RunWebkitTests),
-      ('webkit_layout', RunWebkitLayoutTests)
+      ('webkit_layout', RunWebkitLayoutTests),
+      ('webrtc', RunWebRTCTests),
   ]