Fix cpplint errors in cc/(animation|input|layers|trees|test)/

cc/layers/io_surface_layer.h

 // Copyright 2012 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_LAYERS_IO_SURFACE_LAYER_H_
 #define CC_LAYERS_IO_SURFACE_LAYER_H_
 
 #include "cc/base/cc_export.h"
 #include "cc/layers/layer.h"
 
@@ skipping 13 matching lines @@
  protected:
   IOSurfaceLayer();
 
  private:
   virtual ~IOSurfaceLayer();
 
   uint32_t io_surface_id_;
   gfx::Size io_surface_size_;
 };
 
-}
+}  // namespace cc
 #endif  // CC_LAYERS_IO_SURFACE_LAYER_H_