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

cc/test/fake_output_surface.cc

Index: cc/test/fake_output_surface.cc
diff --git a/cc/test/fake_output_surface.cc b/cc/test/fake_output_surface.cc
index 3408964ff5708586ee7c6dec89beda6a648f2a08..f8a9b7cb6e0a40f83a2b2677ac338086bb92f54a 100644
--- a/cc/test/fake_output_surface.cc
+++ b/cc/test/fake_output_surface.cc
@@ -44,21 +44,23 @@ FakeOutputSurface::FakeOutputSurface(
 
 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();