Define EncodedVideoSource and RtcCapturedEncodingVideoCapturer.

content/renderer/media/video_capture_message_filter.h

Index: content/renderer/media/video_capture_message_filter.h
diff --git a/content/renderer/media/video_capture_message_filter.h b/content/renderer/media/video_capture_message_filter.h
index 3499540cbab71cc8b10d1f43e83820ad0eea3f26..e4ee732c7fefe0b5e9781a7c09fdb633196343fd 100644
--- a/content/renderer/media/video_capture_message_filter.h
+++ b/content/renderer/media/video_capture_message_filter.h
@@ -18,6 +18,7 @@
 #include "content/common/media/video_capture.h"
 #include "ipc/ipc_channel_proxy.h"
 #include "media/video/capture/video_capture.h"
+#include "media/video/encoded_video_source.h"
 
 namespace content {
 
@@ -46,6 +47,31 @@ class CONTENT_EXPORT VideoCaptureMessageFilter
     // |device_id| is the device id for the delegate.
     virtual void OnDelegateAdded(int32 device_id) = 0;
 
+    // Called when the encoding capabilities is received from video capture
+    // device in the browser process.
+    virtual void OnEncodingCapabilitiesAvailable(
+        const media::VideoEncodingCapabilities& capabilities) = 0;
+
+    // Called when a bitstream is opened on a video capture device.
+    virtual void OnEncodedBitstreamOpened(
+        const media::VideoEncodingParameters& params,
+        const std::vector<base::SharedMemoryHandle>& buffers,
+        uint32 buffer_size) = 0;
+
+    // Called when a bitstream is closed on a video capture device.
+    virtual void OnEncodedBitstreamClosed() = 0;
+
+    // Called when encoding parameters has changed.
+    virtual void OnEncodingConfigChanged(
+        const media::RuntimeVideoEncodingParameters& params) = 0;
+
+    // Called when an encoded bitstream buffer is received from video capture
+    // device in the browser process.
+    virtual void OnEncodedBufferReady(
+        int buffer_id,
+        uint32 size,
+        const media::BufferEncodingMetadata& metadata) = 0;
+
    protected:
     virtual ~Delegate() {}
   };
@@ -92,6 +118,30 @@ class CONTENT_EXPORT VideoCaptureMessageFilter
   void OnDeviceInfoReceived(int device_id,
                             const media::VideoCaptureParams& params);
 
+  // Receive encoding capabilities from browser process.
+  void OnCapabilitiesAvailable(int device_id,
+                               media::VideoEncodingCapabilities capabilities);
+
+  // Bitstream is opened on video capture device.
+  void OnBitstreamOpened(int device_id,
+                         media::VideoEncodingParameters params,
+                         std::vector<base::SharedMemoryHandle> buffers,
+                         uint32 buffer_size);
+
+  // Bitstream is closed on video capture device.
+  void OnBitstreamClosed(int device_id);
+
+  // Receive current encoding parameters from browser process.
+  void OnBitstreamConfigChanged(int device_id,
+                                media::RuntimeVideoEncodingParameters params);
+
+  // Receive an encoded bitstream buffer from browser process.
+  void OnBitstreamReady(int device_id, int buffer_id, uint32 size,
+                        media::BufferEncodingMetadata metadata);
+
+  // Finds the delegate associated with |device_id|, NULL if not found.
+  Delegate* find_delegate(int device_id) const;
+
   // A map of device ids to delegates.
   Delegates delegates_;
   Delegates pending_delegates_;