MessageLoopProxy cleanups in remoting client.

remoting/client/rectangle_update_decoder.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_RECTANGLE_UPDATE_DECODER_H_
 #define REMOTING_CLIENT_RECTANGLE_UPDATE_DECODER_H_
 
 #include <list>
 
 #include "base/callback_forward.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "remoting/base/decoder.h"
 #include "remoting/client/frame_consumer_proxy.h"
 #include "remoting/client/frame_producer.h"
 
 namespace base {
-class MessageLoopProxy;
+class SingleThreadTaskRunner;
 }  // namespace base
 
 namespace pp {
 class ImageData;
 };
 
 namespace remoting {
 
 class VideoPacket;
 
 namespace protocol {
 class SessionConfig;
 }  // namespace protocol
 
 // TODO(ajwong): Re-examine this API, especially with regards to how error
 // conditions on each step are reported.  Should they be CHECKs? Logs? Other?
 // TODO(sergeyu): Rename this class.
-class RectangleUpdateDecoder :
-    public base::RefCountedThreadSafe<RectangleUpdateDecoder>,
-    public FrameProducer {
+class RectangleUpdateDecoder
+    : public base::RefCountedThreadSafe<RectangleUpdateDecoder>,
+      public FrameProducer {
  public:
-  // Creates an update decoder on |message_loop_|, outputting to |consumer|.
+  // Creates an update decoder on |task_runner_|, outputting to |consumer|.
   // TODO(wez): Replace the ref-counted proxy with an owned FrameConsumer.
-  RectangleUpdateDecoder(scoped_refptr<base::MessageLoopProxy> message_loop,
-                         scoped_refptr<FrameConsumerProxy> consumer);
+  RectangleUpdateDecoder(
+      scoped_refptr<base::SingleThreadTaskRunner> task_runner,
+      scoped_refptr<FrameConsumerProxy> consumer);
 
   // Initializes decoder with the information from the protocol config.
   void Initialize(const protocol::SessionConfig& config);
 
   // Decodes the contents of |packet|. DecodePacket may keep a reference to
   // |packet| so the |packet| must remain alive and valid until |done| is
   // executed.
   void DecodePacket(scoped_ptr<VideoPacket> packet, const base::Closure& done);
 
   // FrameProducer implementation.  These methods may be called before we are
   // Initialize()d, or we know the source screen size.
   virtual void DrawBuffer(pp::ImageData* buffer) OVERRIDE;
   virtual void InvalidateRegion(const SkRegion& region) OVERRIDE;
   virtual void RequestReturnBuffers(const base::Closure& done) OVERRIDE;
   virtual void SetOutputSizeAndClip(const SkISize& view_size,
                                     const SkIRect& clip_area) OVERRIDE;
 
  private:
   friend class base::RefCountedThreadSafe<RectangleUpdateDecoder>;
   virtual ~RectangleUpdateDecoder();
 
   // Paints the invalidated region to the next available buffer and returns it
   // to the consumer.
   void SchedulePaint();
   void DoPaint();
 
-  scoped_refptr<base::MessageLoopProxy> message_loop_;
+  scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
   scoped_refptr<FrameConsumerProxy> consumer_;
   scoped_ptr<Decoder> decoder_;
 
   // Remote screen size in pixels.
   SkISize source_size_;
 
   // The current dimentions of the frame consumer view.
   SkISize view_size_;
   SkIRect clip_area_;
 
   // The drawing buffers supplied by the frame consumer.
   std::list<pp::ImageData*> buffers_;
 
   // Flag used to coalesce runs of SchedulePaint()s into a single DoPaint().
   bool paint_scheduled_;
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_CLIENT_RECTANGLE_UPDATE_DECODER_H_