Update Surface ID Terminology

cc/surfaces/display_scheduler.h

 // 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.
 
 #ifndef CC_SURFACES_DISPLAY_SCHEDULER_H_
 #define CC_SURFACES_DISPLAY_SCHEDULER_H_
 
 #include <memory>
 
 #include "base/cancelable_callback.h"
@@ skipping 22 matching lines @@
   DisplayScheduler(BeginFrameSource* begin_frame_source,
                    base::SingleThreadTaskRunner* task_runner,
                    int max_pending_swaps);
   ~DisplayScheduler() override;
 
   void SetClient(DisplaySchedulerClient* client);
 
   void SetRootSurfaceResourcesLocked(bool locked);
   void ForceImmediateSwapIfPossible();
   virtual void DisplayResized();
-  virtual void SetNewRootSurface(SurfaceId root_surface_id);
-  virtual void SurfaceDamaged(SurfaceId surface_id);
+  virtual void SetNewRootSurface(const SurfaceId& root_surface_id);
+  virtual void SurfaceDamaged(const SurfaceId& surface_id);
 
   virtual void DidSwapBuffers();
   void DidSwapBuffersComplete();
 
   void OutputSurfaceLost();
 
   // BeginFrameObserverBase implementation
   bool OnBeginFrameDerivedImpl(const BeginFrameArgs& args) override;
   void OnBeginFrameSourcePausedChanged(bool paused) override;
 
@@ skipping 36 matching lines @@
 
   base::WeakPtrFactory<DisplayScheduler> weak_ptr_factory_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(DisplayScheduler);
 };
 
 }  // namespace cc
 
 #endif  // CC_SURFACES_DISPLAY_SCHEDULER_H_