Hook up EncodedVideoSource on the browser side

media/video/capture/mac/video_capture_device_mac.mm

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "media/video/capture/mac/video_capture_device_mac.h"
 
 #import <QTKit/QTKit.h>
 
 #include "base/logging.h"
 #include "base/time.h"
@@ skipping 67 matching lines @@
     : device_name_(device_name),
       observer_(NULL),
       state_(kNotInitialized),
       capture_device_(nil) {
 }
 
 VideoCaptureDeviceMac::~VideoCaptureDeviceMac() {
   [capture_device_ release];
 }
 
+VideoEncodingCapabilities VideoCaptureDeviceMac::GetEncodingCapabilities() {
+  return VideoEncodingCapabilities();
+}
+
+void VideoCaptureDeviceMac::TryConfigureEncodedBitstream(
+    const RuntimeVideoEncodingParameters& params) {
+}
+
 void VideoCaptureDeviceMac::Allocate(int width, int height, int frame_rate,
                                      EventHandler* observer) {
   if (state_ != kIdle) {
     return;
   }
 
   // QTKit can scale captured frame to any size requested, which would lead to
   // undesired aspect ratio change. Tries to open the camera with a natively
   // supported format and let the client to crop/pad the captured frames.
   GetBestMatchSupportedResolution(&width, &height);
@@ skipping 93 matching lines @@
       video_frame, video_frame_length, base::Time::Now(), 0, false, false);
 }
 
 void VideoCaptureDeviceMac::SetErrorState(const std::string& reason) {
   DLOG(ERROR) << reason;
   state_ = kError;
   observer_->OnError();
 }
 
 } // namespace media