Tab Capture: Backing store readbacks to YV12 VideoFrames.

content/browser/renderer_host/media/video_capture_controller.h

Index: content/browser/renderer_host/media/video_capture_controller.h
diff --git a/content/browser/renderer_host/media/video_capture_controller.h b/content/browser/renderer_host/media/video_capture_controller.h
index fae1cc7a2f635291f6cc657e026508bbc17b4ed0..de38541b83f766bc5679ffa591c49e3e435e8459 100644
--- a/content/browser/renderer_host/media/video_capture_controller.h
+++ b/content/browser/renderer_host/media/video_capture_controller.h
@@ -68,6 +68,8 @@ class CONTENT_EXPORT VideoCaptureController
   virtual void OnIncomingCapturedFrame(const uint8* data,
                                        int length,
                                        base::Time timestamp) OVERRIDE;
+  virtual void OnIncomingCapturedVideoFrame(media::VideoFrame* frame,
+                                            base::Time timestamp) OVERRIDE;
   virtual void OnError() OVERRIDE;
   virtual void OnFrameInfo(
       const media::VideoCaptureCapability& info) OVERRIDE;
@@ -108,6 +110,10 @@ class CONTENT_EXPORT VideoCaptureController
   void PostStopping();
   // Check if any DIB is used by client.
   bool ClientHasDIB();
+  // DIB allocator. Locate a free DIB object, reserve it, and return its id
+  // as well as pointers to its color planes. Returns true if successful.
+  bool ReserveSharedMemory(
+    int* buffer_id_out, uint8** yplane, uint8** uplane, uint8** vplane);
 
   // Lock to protect free_dibs_ and owned_dibs_.
   base::Lock lock_;