Update Surface ID Terminology

services/ui/surfaces/surfaces_state.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 SERVICES_UI_SURFACES_SURFACES_STATE_H_
 #define SERVICES_UI_SURFACES_SURFACES_STATE_H_
 
 #include <stdint.h>
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "cc/surfaces/surface_manager.h"
 
 namespace cc {
 class SurfaceHittest;
 class SurfaceManager;
 }  // namespace cc
 
 namespace ui {
 
 // The SurfacesState object is an object global to the Window Manager app that
 // holds the SurfaceManager and allocates new Surfaces namespaces.
 // This object lives on the main thread of the Window Manager.
 // TODO(rjkroege, fsamuel): This object will need to change to support multiple
 // displays.
 class SurfacesState : public base::RefCounted<SurfacesState> {
  public:
   SurfacesState();
 
-  uint32_t next_id_namespace() { return next_id_namespace_++; }
+  uint32_t next_client_id() { return next_client_id_++; }
 
   cc::SurfaceManager* manager() { return &manager_; }
 
  private:
   friend class base::RefCounted<SurfacesState>;
   ~SurfacesState();
 
   // A Surface ID is an unsigned 64-bit int where the high 32-bits are generated
   // by the Surfaces service, and the low 32-bits are generated by the process
   // that requested the Surface.
-  uint32_t next_id_namespace_;
+  uint32_t next_client_id_;
   cc::SurfaceManager manager_;
 
   DISALLOW_COPY_AND_ASSIGN(SurfacesState);
 };
 
 }  // namespace ui
 
 #endif  //  SERVICES_UI_SURFACES_SURFACES_STATE_H_