Split WebRTC browser tests in getusermedia and peerconnection tests.

The content browsertests file for WebRTC was growing a bit large. I
extracted the getUserMedia-focused tests into a test of its own and
left the peerconnection tests.

Also renamed all WebRTC content browsertests to use the WebRtc naming
convention, which seems to be the most common in the production code.

Note: this patch will require some filter renames on the WebRTC bots.

R=tommi@chromium.org

Review URL: https://codereview.chromium.org/131203005

git-svn-id: http://src.chromium.org/svn/trunk/src/build@245524 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

android/pylib/gtest/filter/content_browsertests_disabled

@@ -67,16 +67,16 @@ DownloadContentTest.ResumeInterruptedDownloadBadPrecondition
 DownloadContentTest.ResumeWithDeletedFile
 
 # http://crbug.com/181069
-WebrtcBrowserTest.CanSetupLegacyCall
-WebrtcBrowserTest.CallWithDataOnly
-WebrtcBrowserTest.CallWithDataAndMedia
-WebrtcBrowserTest.CanMakeEmptyCallThenAddStreamsAndRenegotiate
+WebRtcBrowserTest.CanSetupLegacyCall
+WebRtcBrowserTest.CallWithDataOnly
+WebRtcBrowserTest.CallWithDataAndMedia
+WebRtcBrowserTest.CanMakeEmptyCallThenAddStreamsAndRenegotiate
 WebRTCInternalsBrowserTest.WithRealPeerConnectionCall
 WebRTCInternalsBrowserTest.NegotiateUnsupportedVideoCodec
 WebRTCInternalsBrowserTest.NegotiateNonCryptoCall
 
 # http://crbug.com/175683
-WebrtcBrowserTest.CallWithDataAndLaterAddMedia
+WebRtcBrowserTest.CallWithDataAndLaterAddMedia
 
 # http://crbug.com/224134
 RenderWidgetHostBrowserTest.GetSnapshotFromRendererTest