Deliver IPC messages together with SwapCompositorFrame

content/renderer/gpu/queue_message_swap_promise.h

Index: content/renderer/gpu/queue_message_swap_promise.h
diff --git a/content/renderer/gpu/queue_message_swap_promise.h b/content/renderer/gpu/queue_message_swap_promise.h
new file mode 100644
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+++ b/content/renderer/gpu/queue_message_swap_promise.h
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+// Copyright 2014 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 CONTENT_RENDERER_QUEUE_MESSAGE_SWAP_PROMISE_H_
+#define CONTENT_RENDERER_QUEUE_MESSAGE_SWAP_PROMISE_H_
+
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
+#include "cc/base/swap_promise.h"
+
+namespace IPC {
+class SyncMessageFilter;
+}
+
+namespace content {
+
+class FrameSwapMessageQueue;
+
+class QueueMessageSwapPromise : public cc::SwapPromise {
+ public:
+  QueueMessageSwapPromise(scoped_refptr<IPC::SyncMessageFilter> message_sender,
+                          scoped_refptr<FrameSwapMessageQueue> message_queue,
+                          int source_frame_number);
+
+  virtual ~QueueMessageSwapPromise();
+
+  virtual void DidSwap(cc::CompositorFrameMetadata* metadata) OVERRIDE;
+
+  virtual void DidNotSwap(DidNotSwapReason reason) OVERRIDE;
+
+ private:
+  void PromiseCompleted();
+
+  scoped_refptr<IPC::SyncMessageFilter> message_sender_;
+  scoped_refptr<content::FrameSwapMessageQueue> message_queue_;
+  int source_frame_number_;
+#ifndef NDEBUG
+  bool completed_;
+#endif
+};
+
+}  // namespace content
+
+#endif  // CONTENT_RENDERER_QUEUE_MESSAGE_SWAP_PROMISE_H_