Simplify FrameConsumer interface. Remove FrameProducer interface.

remoting/client/frame_producer.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 REMOTING_CLIENT_FRAME_PRODUCER_H_
-#define REMOTING_CLIENT_FRAME_PRODUCER_H_
-
-#include "base/callback_forward.h"
-
-namespace webrtc {
-class DesktopFrame;
-class DesktopRect;
-class DesktopRegion;
-class DesktopSize;
-}  // namespace webrtc
-
-namespace remoting {
-
-class FrameProducer {
- public:
-  FrameProducer() {}
-
-  // Adds an image buffer to the pool of pending buffers for subsequent drawing.
-  // Once drawing is completed the buffer will be returned to the consumer via
-  // the FrameConsumer::ApplyBuffer() call. Alternatively an empty buffer could
-  // be returned via the FrameConsumer::ReturnBuffer() call.
-  //
-  // The passed buffer must be large enough to hold the whole clipping area.
-  virtual void DrawBuffer(webrtc::DesktopFrame* buffer) = 0;
-
-  // Requests repainting of the specified |region| of the frame as soon as
-  // possible. |region| is specified in output coordinates relative to
-  // the beginning of the frame.
-  virtual void InvalidateRegion(const webrtc::DesktopRegion& region) = 0;
-
-  // Requests returing of all pending buffers to the consumer via
-  // FrameConsumer::ReturnBuffer() calls.
-  virtual void RequestReturnBuffers(const base::Closure& done) = 0;
-
-  // Notifies the producer of changes to the output view size or clipping area.
-  // Implementations must cope with empty |view_size| or |clip_area|.
-  virtual void SetOutputSizeAndClip(const webrtc::DesktopSize& view_size,
-                                    const webrtc::DesktopRect& clip_area) = 0;
-
- protected:
-  virtual ~FrameProducer() {}
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(FrameProducer);
-};
-
-}  // namespace remoting
-
-#endif  // REMOTING_CLIENT_FRAME_PRODUCER_H_