Add content type information to encoded images and corresponding rtp extension header

webrtc/modules/video_coding/video_sender_unittest.cc

 /*
  *  Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 59 matching lines @@
     }
   }
   return res;
 }
 
 class EmptyFrameGenerator : public FrameGenerator {
  public:
   EmptyFrameGenerator(int width, int height) : width_(width), height_(height) {}
   VideoFrame* NextFrame() override {
     frame_.reset(new VideoFrame(I420Buffer::Create(width_, height_),
-                                webrtc::kVideoRotation_0, 0));
+                                webrtc::kVideoRotation_0,
+                                webrtc::VideoContentType::kDefault, 0));
     return frame_.get();
   }
 
  private:
   const int width_;
   const int height_;
   std::unique_ptr<VideoFrame> frame_;
 };
 
 class EncodedImageCallbackImpl : public EncodedImageCallback {
@@ skipping 392 matching lines @@
   }
   {
     Vp8StreamInfo expected = {{3.75, 7.5, 15.0}, {low_b, mid_b, high_b}};
     EXPECT_THAT(SimulateWithFramerate(15.0), MatchesVp8StreamInfo(expected));
   }
 }
 
 }  // namespace
 }  // namespace vcm
 }  // namespace webrtc