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

content/browser/compositor/offscreen_browser_compositor_output_surface.cc

 // Copyright 2015 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/compositor/offscreen_browser_compositor_output_surface.h"
 
 #include <utility>
 
 #include "base/logging.h"
 #include "build/build_config.h"
@@ skipping 117 matching lines @@
     gl->BindFramebuffer(GL_FRAMEBUFFER, fbo_);
   }
 }
 
 GLenum
 OffscreenBrowserCompositorOutputSurface::GetFramebufferCopyTextureFormat() {
   return GLCopyTextureInternalFormat(kFboTextureFormat);
 }
 
 void OffscreenBrowserCompositorOutputSurface::SwapBuffers(
-    cc::CompositorFrame* frame) {
+    cc::CompositorFrame frame) {
   if (reflector_) {
-    if (frame->gl_frame_data->sub_buffer_rect ==
-        gfx::Rect(frame->gl_frame_data->size))
+    if (frame.gl_frame_data->sub_buffer_rect ==
+        gfx::Rect(frame.gl_frame_data->size))
       reflector_->OnSourceSwapBuffers();
     else
-      reflector_->OnSourcePostSubBuffer(frame->gl_frame_data->sub_buffer_rect);
+      reflector_->OnSourcePostSubBuffer(frame.gl_frame_data->sub_buffer_rect);
   }
 
   client_->DidSwapBuffers();
 
   // TODO(oshima): sync with the reflector's SwapBuffersComplete
   // (crbug.com/520567).
   // The original implementation had a flickering issue (crbug.com/515332).
   gpu::gles2::GLES2Interface* gl = context_provider_->ContextGL();
   const GLuint64 fence_sync = gl->InsertFenceSyncCHROMIUM();
   gl->ShallowFlushCHROMIUM();
 
   gpu::SyncToken sync_token;
   gl->GenUnverifiedSyncTokenCHROMIUM(fence_sync, sync_token.GetData());
   context_provider_->ContextSupport()->SignalSyncToken(
       sync_token, base::Bind(&OutputSurface::OnSwapBuffersComplete,
                              weak_ptr_factory_.GetWeakPtr()));
 }
 
 void OffscreenBrowserCompositorOutputSurface::OnReflectorChanged() {
   if (reflector_)
     EnsureBackbuffer();
 }
 
 base::Closure
 OffscreenBrowserCompositorOutputSurface::CreateCompositionStartedCallback() {
   return base::Closure();
 }
 
 }  // namespace content