Move VISUAL_STATE promise to activation

content/renderer/gpu/frame_swap_message_queue.h

 // 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_GPU_FRAME_SWAP_MESSAGE_QUEUE_H_
 #define CONTENT_RENDERER_GPU_FRAME_SWAP_MESSAGE_QUEUE_H_
 
 #include <map>
 #include <vector>
 
@@ skipping 34 matching lines @@
   // |is_first| - output parameter. Set to true if this was the first message
   //              enqueued for the given source_frame_number.
   void QueueMessageForFrame(MessageDeliveryPolicy policy,
                             int source_frame_number,
                             scoped_ptr<IPC::Message> msg,
                             bool* is_first);
 
   // Returns true if there are no messages in the queue.
   bool Empty() const;
 
-  // Should be called when a successful swap occurs. The messages for that swap
-  // can be obtained by calling DrainMessages.
+  // Should be called when a successful activation occurs. The messages for
+  // that activation can be obtained by calling DrainMessages.
+  //
+  // |source_frame_number| frame number for which the activate occurred.
+  void DidActivate(int source_frame_number);
+
+  // Should be called when a successful swap occurs. The messages for that
+  // swap can be obtained by calling DrainMessages.
   //
   // |source_frame_number| frame number for which the swap occurred.
   void DidSwap(int source_frame_number);
 
-  // Should be called when we know a swap will not occur. This also means we
-  // won't be expecting a DrainMessages call.
+  // Should be called when we know a swap will not occur.
   //
   // |source_frame_number| frame number for which the swap will not occur.
   // |reason| reason for the which the swap will not occur.
   // |messages| depending on |reason| it may make sense to deliver certain
   //            messages asynchronously. This vector will contain those
   //            messages.
   void DidNotSwap(int source_frame_number,
                   cc::SwapPromise::DidNotSwapReason reason,
                   ScopedVector<IPC::Message>* messages);
 
@@ skipping 26 matching lines @@
   scoped_ptr<FrameSwapMessageSubQueue> visual_state_queue_;
   scoped_ptr<FrameSwapMessageSubQueue> swap_queue_;
   ScopedVector<IPC::Message> next_drain_messages_;
 
   DISALLOW_COPY_AND_ASSIGN(FrameSwapMessageQueue);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_GPU_FRAME_SWAP_MESSAGE_QUEUE_H_