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

content/test/mailbox_output_surface.cc

 // Copyright 2016 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/test/mailbox_output_surface.h"
 
 #include "base/logging.h"
 #include "cc/output/compositor_frame.h"
 #include "cc/output/compositor_frame_ack.h"
 #include "cc/output/gl_frame_data.h"
@@ skipping 200 matching lines @@
   if (!previous_frame_ack_) {
     previous_frame_ack_.reset(new cc::CompositorFrameAck);
     previous_frame_ack_->gl_frame_data.reset(new cc::GLFrameData);
   }
 
   OnSwapAck(output_surface_id, *previous_frame_ack_);
 
   previous_frame_ack_->gl_frame_data = std::move(gl_frame_data);
 }
 
-void MailboxOutputSurface::SwapBuffers(cc::CompositorFrame* frame) {
+void MailboxOutputSurface::SwapBuffers(
+    std::unique_ptr<cc::CompositorFrame> frame) {
   // This class is here to support layout tests that are currently
   // doing a readback in the renderer instead of the browser. So they
   // are using deprecated code paths in the renderer and don't need to
   // actually swap anything to the browser. We shortcut the swap to the
   // browser here and just ack directly within the renderer process.
   // Once crbug.com/311404 is fixed, this can be removed.
 
   // This would indicate that crbug.com/311404 is being fixed, and this
   // block needs to be removed.
   DCHECK(!frame->delegated_frame_data);
@@ skipping 31 matching lines @@
 
 MailboxOutputSurface::TransferableFrame::TransferableFrame() : texture_id(0) {}
 
 MailboxOutputSurface::TransferableFrame::TransferableFrame(
     uint32_t texture_id,
     const gpu::Mailbox& mailbox,
     const gfx::Size size)
     : texture_id(texture_id), mailbox(mailbox), size(size) {}
 
 }  // namespace content