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

content/browser/renderer_host/render_widget_host_impl.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/browser/renderer_host/render_widget_host_impl.h"
 
 #include <math.h>
 
 #include <set>
 #include <tuple>
@@ skipping 1570 matching lines @@
 
 bool RenderWidgetHostImpl::OnSwapCompositorFrame(
     const IPC::Message& message) {
   // This trace event is used in
   // chrome/browser/extensions/api/cast_streaming/performance_test.cc
   TRACE_EVENT0("test_fps,benchmark", "OnSwapCompositorFrame");
 
   ViewHostMsg_SwapCompositorFrame::Param param;
   if (!ViewHostMsg_SwapCompositorFrame::Read(&message, &param))
     return false;
-  std::unique_ptr<cc::CompositorFrame> frame(new cc::CompositorFrame);
+  std::unique_ptr<cc::CompositorFrame> frame(std::move(std::get<1>(param)));
   uint32_t output_surface_id = std::get<0>(param);
-  std::get<1>(param).AssignTo(frame.get());
   std::vector<IPC::Message> messages_to_deliver_with_frame;
   messages_to_deliver_with_frame.swap(std::get<2>(param));
 
   if (!ui::LatencyInfo::Verify(frame->metadata.latency_info,
                                "RenderWidgetHostImpl::OnSwapCompositorFrame")) {
     std::vector<ui::LatencyInfo>().swap(frame->metadata.latency_info);
   }
 
   latency_tracker_.OnSwapCompositorFrame(&frame->metadata.latency_info);
 
@@ skipping 595 matching lines @@
   return delegate_ ? delegate_->GetRootBrowserAccessibilityManager() : NULL;
 }
 
 BrowserAccessibilityManager*
     RenderWidgetHostImpl::GetOrCreateRootBrowserAccessibilityManager() {
   return delegate_ ?
       delegate_->GetOrCreateRootBrowserAccessibilityManager() : NULL;
 }
 
 }  // namespace content