Suppress GMOCK printouts from TestVideoSenderWithVp8

Adding a missing EXPECT_CALL.

R=stefan@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/20529005

git-svn-id: http://webrtc.googlecode.com/svn/trunk@6196 4adac7df-926f-26a2-2b94-8c16560cd09d

webrtc/modules/video_coding/main/source/video_sender_unittest.cc

@@ -345,6 +345,8 @@ class TestVideoSenderWithVp8 : public TestVideoSender {
   void InsertFrames(float framerate, float seconds) {
     for (int i = 0; i < seconds * framerate; ++i) {
       clock_.AdvanceTimeMilliseconds(1000.0f / framerate);
+      EXPECT_CALL(post_encode_callback_, Encoded(_, NULL, NULL))
+          .WillOnce(Return(0));
       AddFrame();
 
       // SetChannelParameters needs to be called frequently to propagate