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

cc/output/software_renderer.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/output/software_renderer.h"
 
 #include "base/memory/ptr_util.h"
 #include "base/trace_event/trace_event.h"
 #include "cc/base/math_util.h"
 #include "cc/output/compositor_frame.h"
@@ skipping 91 matching lines @@
 void SoftwareRenderer::FinishDrawingFrame(DrawingFrame* frame) {
   TRACE_EVENT0("cc", "SoftwareRenderer::FinishDrawingFrame");
   current_framebuffer_lock_ = nullptr;
   current_framebuffer_canvas_.reset();
   current_canvas_ = NULL;
   root_canvas_ = NULL;
 
   output_device_->EndPaint();
 }
 
-void SoftwareRenderer::SwapBuffers(const CompositorFrameMetadata& metadata) {
+void SoftwareRenderer::SwapBuffers(CompositorFrameMetadata metadata) {
   TRACE_EVENT0("cc,benchmark", "SoftwareRenderer::SwapBuffers");
   CompositorFrame compositor_frame;
-  compositor_frame.metadata = metadata;
-  output_surface_->SwapBuffers(&compositor_frame);
+  compositor_frame.metadata = std::move(metadata);
+  output_surface_->SwapBuffers(std::move(compositor_frame));
 }
 
 bool SoftwareRenderer::FlippedFramebuffer(const DrawingFrame* frame) const {
   return false;
 }
 
 void SoftwareRenderer::EnsureScissorTestEnabled() {
   is_scissor_enabled_ = true;
   SetClipRect(scissor_rect_);
 }
@@ skipping 624 matching lines @@
       ApplyImageFilter(filter.get(), quad, backdrop_bitmap, nullptr);
 
   if (!filter_backdrop_image)
     return nullptr;
 
   return filter_backdrop_image->makeShader(content_tile_mode, content_tile_mode,
                                            &filter_backdrop_transform);
 }
 
 }  // namespace cc