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

cc/test/fake_output_surface.cc

 // Copyright 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 "cc/test/fake_output_surface.h"
 
 #include "base/bind.h"
 #include "base/message_loop/message_loop.h"
 #include "cc/output/compositor_frame_ack.h"
 #include "cc/output/output_surface_client.h"
@@ skipping 26 matching lines @@
     std::unique_ptr<SoftwareOutputDevice> software_device,
     bool delegated_rendering)
     : OutputSurface(std::move(context_provider),
                     std::move(worker_context_provider),
                     std::move(software_device)) {
   capabilities_.delegated_rendering = delegated_rendering;
 }
 
 FakeOutputSurface::~FakeOutputSurface() {}
 
-void FakeOutputSurface::SwapBuffers(CompositorFrame* frame) {
-  if (frame->delegated_frame_data || !context_provider()) {
-    frame->AssignTo(&last_sent_frame_);
+void FakeOutputSurface::SwapBuffers(CompositorFrame frame) {
+  std::unique_ptr<CompositorFrame> frame_copy(new CompositorFrame);
+  *frame_copy = std::move(frame);
+  if (frame_copy->delegated_frame_data || !context_provider()) {
+    last_sent_frame_ = std::move(frame_copy);
 
-    if (last_sent_frame_.delegated_frame_data) {
+    if (last_sent_frame_->delegated_frame_data) {
       resources_held_by_parent_.insert(
           resources_held_by_parent_.end(),
-          last_sent_frame_.delegated_frame_data->resource_list.begin(),
-          last_sent_frame_.delegated_frame_data->resource_list.end());
+          last_sent_frame_->delegated_frame_data->resource_list.begin(),
+          last_sent_frame_->delegated_frame_data->resource_list.end());
     }
 
     ++num_sent_frames_;
   } else {
-    last_swap_rect_ = frame->gl_frame_data->sub_buffer_rect;
-    frame->AssignTo(&last_sent_frame_);
+    last_swap_rect_ = frame_copy->gl_frame_data->sub_buffer_rect;
+    last_sent_frame_ = std::move(frame_copy);
     ++num_sent_frames_;
   }
   PostSwapBuffersComplete();
   client_->DidSwapBuffers();
 }
 
 void FakeOutputSurface::BindFramebuffer() {
   if (framebuffer_) {
     context_provider_->ContextGL()->BindFramebuffer(GL_FRAMEBUFFER,
                                                     framebuffer_);
@@ skipping 53 matching lines @@
     const {
   return overlay_candidate_validator_;
 }
 
 void FakeOutputSurface::SetMemoryPolicyToSetAtBind(
     std::unique_ptr<ManagedMemoryPolicy> memory_policy_to_set_at_bind) {
   memory_policy_to_set_at_bind_.swap(memory_policy_to_set_at_bind);
 }
 
 }  // namespace cc