Add metadata to media::VideoFrame and plumb it through IPC/MediaStream.

content/renderer/pepper/pepper_video_capture_host.h

 // 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.
 
 #ifndef CONTENT_RENDERER_PEPPER_PEPPER_VIDEO_CAPTURE_HOST_H_
 #define CONTENT_RENDERER_PEPPER_PEPPER_VIDEO_CAPTURE_HOST_H_
 
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 41 matching lines @@
   // frames delivered.
   void OnStopped();
 
   // Called when video capture has paused.
   void OnPaused();
 
   // Called when video capture cannot be started because of an error.
   void OnError();
 
   // Called when a video frame is ready.
-  void OnFrameReady(const scoped_refptr<media::VideoFrame>& frame,
-                    media::VideoCaptureFormat format);
+  void OnFrameReady(const scoped_refptr<media::VideoFrame>& frame);
 
  private:
   int32_t OnOpen(ppapi::host::HostMessageContext* context,
                  const std::string& device_id,
                  const PP_VideoCaptureDeviceInfo_Dev& requested_info,
                  uint32_t buffer_count);
   int32_t OnStartCapture(ppapi::host::HostMessageContext* context);
   int32_t OnReuseBuffer(ppapi::host::HostMessageContext* context,
                         uint32_t buffer);
   int32_t OnStopCapture(ppapi::host::HostMessageContext* context);
@@ skipping 38 matching lines @@
   ppapi::host::ReplyMessageContext open_reply_context_;
 
   PepperDeviceEnumerationHostHelper enumeration_helper_;
 
   DISALLOW_COPY_AND_ASSIGN(PepperVideoCaptureHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_PEPPER_PEPPER_VIDEO_CAPTURE_HOST_H_