Implement video renderer based on VideoDecode API.

remoting/client/plugin/chromoting_instance.h

Index: remoting/client/plugin/chromoting_instance.h
diff --git a/remoting/client/plugin/chromoting_instance.h b/remoting/client/plugin/chromoting_instance.h
index 548d37b52400b98421076982c5eb961f665df3f6..f6e8d32e9fc4a3dfb62ddccf02ba5b165457a4f2 100644
--- a/remoting/client/plugin/chromoting_instance.h
+++ b/remoting/client/plugin/chromoting_instance.h
@@ -126,6 +126,7 @@ class ChromotingInstance : public ClientUserInterface,
   void SetCursorShape(const protocol::CursorShapeInfo& cursor_shape) override;
 
   // PepperVideoRenderer::EventHandler interface.
+  void OnVideoDecodeError() override;
   void OnVideoFirstFrameReceived() override;
   void OnVideoSize(const webrtc::DesktopSize& size,
                       const webrtc::DesktopVector& dpi) override;
@@ -192,6 +193,8 @@ class ChromotingInstance : public ClientUserInterface,
   void HandleSendMouseInputWhenUnfocused();
   void HandleDelegateLargeCursors();
 
+  void Disconnect();
+
   // Helper method to post messages to the webapp.
   void PostChromotingMessage(const std::string& method,
                              const pp::VarDictionary& data);