Disable flaky test while working on improvement.

webrtc/media/engine/webrtcvideoengine2_unittest.cc

Index: webrtc/media/engine/webrtcvideoengine2_unittest.cc
diff --git a/webrtc/media/engine/webrtcvideoengine2_unittest.cc b/webrtc/media/engine/webrtcvideoengine2_unittest.cc
index ddfa52c570e53c0cdc7e093868e47d101b819c85..62e1ea760cd05a64b993f3cea32531cc920c3fcc 100644
--- a/webrtc/media/engine/webrtcvideoengine2_unittest.cc
+++ b/webrtc/media/engine/webrtcvideoengine2_unittest.cc
@@ -906,7 +906,7 @@ TEST_F(WebRtcVideoEngine2Test, StreamParamsIdPassedToDecoderFactory) {
   EXPECT_EQ(sp.id, params[0].receive_stream_id);
 }
 
-TEST_F(WebRtcVideoEngine2Test, RecreatesEncoderOnContentTypeChange) {
+TEST_F(WebRtcVideoEngine2Test, DISABLED_RecreatesEncoderOnContentTypeChange) {
   cricket::FakeWebRtcVideoEncoderFactory encoder_factory;
   encoder_factory.AddSupportedVideoCodecType("VP8");
   std::unique_ptr<FakeCall> fake_call(