Reland WebRtcBrowserTest.CanSetupVideoCallAndDisableLocalVideo originally...

Reland WebRtcBrowserTest.CanSetupVideoCallAndDisableLocalVideo originally landed in https://codereview.chromium.org/442313002/

The only difference is that the test has been disabled on
DrMemory since it times out. Notice that many WebRtcBrowsertests are disabled due to the same reason.

BUG= 403070, 398844

Review URL: https://codereview.chromium.org/478543004

Cr-Commit-Position: refs/heads/master@{#292142}

content/browser/media/webrtc_browsertest.cc

@@ -166,6 +166,21 @@ IN_PROC_BROWSER_TEST_F(WebRtcBrowserTest,
   MakeTypicalPeerConnectionCall(javascript);
 }
 
+// Flaky on TSAN v2. http://crbug.com/408006
+#if defined(THREAD_SANITIZER)
+#define MAYBE_CanSetupVideoCallAndDisableLocalVideo \
+  DISABLED_CanSetupVideoCallAndDisableLocalVideo
+#else
+#define MAYBE_CanSetupVideoCallAndDisableLocalVideo \
+  CanSetupVideoCallAndDisableLocalVideo
+#endif
+IN_PROC_BROWSER_TEST_F(WebRtcBrowserTest,
+                       MAYBE_CanSetupVideoCallAndDisableLocalVideo) {
+  const std::string javascript =
+      "callAndDisableLocalVideo({video: true});";
+  MakeTypicalPeerConnectionCall(javascript);
+}
+
 #if defined(OS_LINUX) && !defined(OS_CHROMEOS) && defined(ARCH_CPU_ARM_FAMILY)
 // Timing out on ARM linux, see http://crbug.com/240376
 #define MAYBE_CanSetupAudioAndVideoCall DISABLED_CanSetupAudioAndVideoCall

content/test/data/media/peerconnection-call.html

@@ -58,6 +58,20 @@
     waitForVideo('remote-view-2');
   }
 
+  // Test that we can setup a call with a video track and that the remote peer
+  // receives black frames if the local video track is disabled.
+  function callAndDisableLocalVideo(constraints) {
+    createConnections(null);
+    navigator.webkitGetUserMedia(constraints,
+        addStreamToBothConnectionsAndNegotiate, printGetUserMediaError);
+    detectVideoPlaying('remote-view-1',
+        function () {
+          assertEquals(gLocalStream.getVideoTracks().length, 1);
+          gLocalStream.getVideoTracks()[0].enabled = false;
+          waitForBlackVideo('remote-view-1');
+        });
+  }
+
   // Test that we can setup call with an audio and video track and check that
   // the video resolution is as expected.
   function callAndExpectResolution(constraints,

content/test/data/media/webrtc_test_utilities.js

@@ -52,6 +52,14 @@ function detectVideoStopped(videoElementName, callback) {
               callback);
 }
 
+function detectBlackVideo(videoElementName, callback) {
+  detectVideo(videoElementName,
+              function (pixels, previous_pixels) {
+                return isVideoBlack(pixels);
+              },
+              callback);
+}
+
 function detectVideo(videoElementName, predicate, callback) {
   console.log('Looking at video in element ' + videoElementName);
 
@@ -97,6 +105,11 @@ function waitForVideoToStop(videoElement) {
   detectVideoStopped(videoElement, function () { eventOccured(); });
 }
 
+function waitForBlackVideo(videoElement) {
+  addExpectedEvent();
+  detectBlackVideo(videoElement, function () { eventOccured(); });
+}
+
 // Calculates the current frame rate and compares to |expected_frame_rate|
 // |callback| is triggered with value |true| if the calculated frame rate
 // is +-1 the expected or |false| if five calculations fail to match
@@ -171,6 +184,16 @@ function isVideoPlaying(pixels, previousPixels) {
   return false;
 }
 
+function isVideoBlack(pixels) {
+  for (var i = 0; i < pixels.length; i++) {
+    // |pixels| is in RGBA. Ignore the alpha channel.
+    if (pixels[i] != 0 && (i + 1) % 4 != 0) {
+      return false;
+    }
+  }
+  return true;
+}
+
 // This function matches |left| and |right| and fails the test if the
 // values don't match using normal javascript equality (i.e. the hard
 // types of the operands aren't checked).

tools/valgrind/gtest_exclude/content_browsertests.gtest-drmemory_win32.txt

@@ -36,6 +36,7 @@ WebRtcBrowserTest.CallWithSctpDataOnly
 WebRtcBrowserTest.CanSetupAudioAndVideoCall
 WebRtcBrowserTest.CanSetupAudioAndVideoCallWithoutMsidAndBundle
 WebRtcBrowserTest.CanSetupDefaultVideoCall
+WebRtcBrowserTest.CanSetupVideoCallAndDisableLocalVideo
 WebRtcBrowserTest.CanSetupLegacyCall
 WebRtcBrowserTest.CanSetupVideoCallWith16To9AspectRatio
 WebRtcBrowserTest.CanSetupVideoCallWith1To1AspectRatio