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

cc/output/software_renderer.cc

Index: cc/output/software_renderer.cc
diff --git a/cc/output/software_renderer.cc b/cc/output/software_renderer.cc
index 13d13418b200149d5245614386e93e7c6cac619e..785b5828381ef3101ad522e06774443cc0ab26d2 100644
--- a/cc/output/software_renderer.cc
+++ b/cc/output/software_renderer.cc
@@ -109,11 +109,11 @@ void SoftwareRenderer::FinishDrawingFrame(DrawingFrame* frame) {
   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 {