Make cc::CompositorFrames movable [Part 1 of 2]

content/renderer/gpu/compositor_output_surface.cc

 // 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.
 
 #include "content/renderer/gpu/compositor_output_surface.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/location.h"
@@ skipping 85 matching lines @@
   if (!HasClient())
     return;
   if (output_surface_proxy_) {
     output_surface_proxy_->ClearOutputSurface();
     output_surface_filter_->RemoveHandlerOnCompositorThread(
         routing_id_, output_surface_filter_handler_);
   }
   cc::OutputSurface::DetachFromClient();
 }
 
-void CompositorOutputSurface::SwapBuffers(cc::CompositorFrame* frame) {
+void CompositorOutputSurface::SwapBuffers(cc::CompositorFrame frame) {
   {
     std::unique_ptr<FrameSwapMessageQueue::SendMessageScope>
         send_message_scope =
             frame_swap_message_queue_->AcquireSendMessageScope();
     std::vector<std::unique_ptr<IPC::Message>> messages;
     std::vector<IPC::Message> messages_to_deliver_with_frame;
     frame_swap_message_queue_->DrainMessages(&messages);
     FrameSwapMessageQueue::TransferMessages(&messages,
                                             &messages_to_deliver_with_frame);
     Send(new ViewHostMsg_SwapCompositorFrame(routing_id_, output_surface_id_,
-                                             *frame,
+                                             frame,
                                              messages_to_deliver_with_frame));
     // ~send_message_scope.
   }
   client_->DidSwapBuffers();
 }
 
 void CompositorOutputSurface::BindFramebuffer() {
   // This is a delegating output surface, no framebuffer/direct drawing support.
   NOTREACHED();
 }
@@ skipping 45 matching lines @@
   if (output_surface_id != output_surface_id_)
     return;
   ReclaimResources(&ack);
 }
 
 bool CompositorOutputSurface::Send(IPC::Message* message) {
   return message_sender_->Send(message);
 }
 
 }  // namespace content