Implement temporary reference assignment with DisplayCompositor.

cc/surfaces/compositor_frame_sink_support.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 "cc/surfaces/compositor_frame_sink_support.h"
 
 #include <algorithm>
 #include <utility>
-#include <vector>
 
 #include "cc/output/compositor_frame.h"
 #include "cc/scheduler/begin_frame_source.h"
 #include "cc/surfaces/compositor_frame_sink_support_client.h"
 #include "cc/surfaces/display.h"
 #include "cc/surfaces/surface.h"
 #include "cc/surfaces/surface_manager.h"
 #include "cc/surfaces/surface_reference.h"
 
 namespace cc {
@@ skipping 146 matching lines @@
   DCHECK(it->is_valid());
   surface_manager_->UnregisterFrameSinkHierarchy(frame_sink_id_,
                                                  child_frame_sink_id);
   child_frame_sinks_.erase(it);
 }
 
 void CompositorFrameSinkSupport::ForceReclaimResources() {
   surface_factory_.ClearSurface();
 }
 
+void CompositorFrameSinkSupport::ClaimTemporaryReference(
+    const SurfaceId& surface_id) {
+  surface_manager_->AssignTemporaryReference(surface_id, frame_sink_id_);
+}
+
 void CompositorFrameSinkSupport::ReferencedSurfacesChanged(
     const LocalSurfaceId& local_surface_id,
     const std::vector<SurfaceId>* active_referenced_surfaces,
     const std::vector<SurfaceId>* pending_referenced_surfaces) {
   if (!surface_manager_->using_surface_references())
     return;
 
   SurfaceId last_surface_id = reference_tracker_.current_surface_id();
 
   // Populate list of surface references to add and remove based on reference
@@ skipping 65 matching lines @@
   else
     begin_frame_source_->RemoveObserver(this);
 }
 
 void CompositorFrameSinkSupport::RequestCopyOfSurface(
     std::unique_ptr<CopyOutputRequest> request) {
   surface_factory_.RequestCopyOfSurface(std::move(request));
 }
 
 }  // namespace cc