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

content/public/test/browser_test_utils.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/public/test/browser_test_utils.h"
 
 #include <stddef.h>
 #include <tuple>
 #include <utility>
 
@@ skipping 1141 matching lines @@
       ->ScheduleComposite();
 }
 
 FrameWatcher::FrameWatcher() : MessageFilter(), frames_to_wait_(0) {}
 
 FrameWatcher::~FrameWatcher() {
 }
 
 void FrameWatcher::ReceivedFrameSwap(cc::CompositorFrameMetadata metadata) {
   --frames_to_wait_;
-  last_metadata_ = metadata;
+  last_metadata_ = std::move(metadata);
   if (frames_to_wait_ == 0)
     quit_.Run();
 }
 
 bool FrameWatcher::OnMessageReceived(const IPC::Message& message) {
   if (message.type() == ViewHostMsg_SwapCompositorFrame::ID) {
     ViewHostMsg_SwapCompositorFrame::Param param;
     if (!ViewHostMsg_SwapCompositorFrame::Read(&message, &param))
       return false;
-    std::unique_ptr<cc::CompositorFrame> frame(new cc::CompositorFrame);
-    std::get<1>(param).AssignTo(frame.get());
+    cc::CompositorFrame frame(std::move(std::get<1>(param)));
 
     BrowserThread::PostTask(
         BrowserThread::UI, FROM_HERE,
-        base::Bind(&FrameWatcher::ReceivedFrameSwap, this, frame->metadata));
+        base::Bind(&FrameWatcher::ReceivedFrameSwap, this,
+                   base::Passed(std::move(frame.metadata))));
   }
   return false;
 }
 
 void FrameWatcher::AttachTo(WebContents* web_contents) {
   DCHECK(web_contents);
   RenderWidgetHostImpl* widget_host = RenderWidgetHostImpl::From(
       web_contents->GetRenderViewHost()->GetWidget());
   widget_host->GetProcess()->GetChannel()->AddFilter(this);
 }
@@ skipping 86 matching lines @@
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   if (ack_result_ != INPUT_EVENT_ACK_STATE_UNKNOWN)
     return ack_result_;
   base::RunLoop run_loop;
   base::AutoReset<base::Closure> reset_quit(&quit_, run_loop.QuitClosure());
   run_loop.Run();
   return ack_result_;
 }
 
 }  // namespace content