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      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef CONTENT_RENDERER_QUEUE_MESSAGE_SWAP_PROMISE_H_
      6 #define CONTENT_RENDERER_QUEUE_MESSAGE_SWAP_PROMISE_H_
      7 
      8 #include "base/memory/ref_counted.h"
      9 #include "base/memory/scoped_ptr.h"
     10 #include "cc/base/swap_promise.h"
     11 
     12 namespace IPC {
     13 class SyncMessageFilter;
     14 }
     15 
     16 namespace content {
     17 
     18 class FrameSwapMessageQueue;
     19 
     20 class QueueMessageSwapPromise : public cc::SwapPromise {
     21  public:
     22   QueueMessageSwapPromise(scoped_refptr<IPC::SyncMessageFilter> message_sender,
     23                           scoped_refptr<FrameSwapMessageQueue> message_queue,
     24                           int source_frame_number);
     25 
     26   virtual ~QueueMessageSwapPromise();
     27 
     28   virtual void DidSwap(cc::CompositorFrameMetadata* metadata) OVERRIDE;
     29 
     30   virtual void DidNotSwap(DidNotSwapReason reason) OVERRIDE;
     31 
     32   virtual int64 TraceId() const OVERRIDE;
     33 
     34  private:
     35   void PromiseCompleted();
     36 
     37   scoped_refptr<IPC::SyncMessageFilter> message_sender_;
     38   scoped_refptr<content::FrameSwapMessageQueue> message_queue_;
     39   int source_frame_number_;
     40 #if DCHECK_IS_ON
     41   bool completed_;
     42 #endif
     43 };
     44 
     45 }  // namespace content
     46 
     47 #endif  // CONTENT_RENDERER_QUEUE_MESSAGE_SWAP_PROMISE_H_
     48