Ported media stream track enable-disable test to content module.

content/browser/media/webrtc_browsertest.cc

Index: content/browser/media/webrtc_browsertest.cc
diff --git a/content/browser/media/webrtc_browsertest.cc b/content/browser/media/webrtc_browsertest.cc
index aecd07fe47683f6e912a76d6eef5cfcb8586628d..5bfb16f6457b24428b413910a91beee7f4cff599 100644
--- a/content/browser/media/webrtc_browsertest.cc
+++ b/content/browser/media/webrtc_browsertest.cc
@@ -449,6 +449,8 @@ IN_PROC_BROWSER_TEST_F(WebrtcBrowserTest, MANUAL_CanSetupCallAndSendDtmf) {
   MakeTypicalPeerConnectionCall("callAndSendDtmf('123,abc');");
 }
 
+// TODO(phoglund): this test fails because the peer connection state will be
+// stable in the second negotiation round rather than have-local-offer.

[perkj_chrome, 2014/01/08 08:55:51]

Somewhere it is a bug. 
See http://dev.w3.org/2011/webrtc/editor/webrtc.html and look at the state
transition diagram.

It seems like this has worked and has been broken
https://code.google.com/p/chromium/issues/detail?id=29312.

 IN_PROC_BROWSER_TEST_F(WebrtcBrowserTest,
                        DISABLED_CanMakeEmptyCallThenAddStreamsAndRenegotiate) {
   const char* kJavascript =
@@ -701,6 +703,16 @@ IN_PROC_BROWSER_TEST_F(WebrtcBrowserTest,
   MakeTypicalPeerConnectionCall("callAndEnsureAudioMutingWorks();");
 }
 
+IN_PROC_BROWSER_TEST_F(WebrtcBrowserTest, CallAndVerifyVideoMutingWorks) {
+  ASSERT_TRUE(embedded_test_server()->InitializeAndWaitUntilReady());
+
+  GURL url(embedded_test_server()->GetURL("/media/peerconnection-call.html"));
+  NavigateToURL(shell(), url);
+
+  EXPECT_TRUE(ExecuteJavascript("callAndEnsureVideoMutingWorks();"));
+  ExpectTitle("OK");
+}
+
 #if defined(OS_WIN) || (defined(OS_LINUX) && !defined(OS_CHROMEOS) && defined(ARCH_CPU_ARM_FAMILY))
 // Timing out on ARM linux bot: http://crbug.com/238490
 // Failing on Windows: http://crbug.com/331035