Require explicit selection of traits for LazyInstance

cc/layers/empty_content_layer_client.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_LAYERS_EMPTY_CONTENT_LAYER_CLIENT_H_
 #define CC_LAYERS_EMPTY_CONTENT_LAYER_CLIENT_H_
 
 #include <memory>
 
 #include "base/lazy_instance.h"
@@ skipping 17 matching lines @@
   static ContentLayerClient* GetInstance();
 
   // ContentLayerClient implementation.
   gfx::Rect PaintableRegion() override;
   scoped_refptr<DisplayItemList> PaintContentsToDisplayList(
       PaintingControlSetting painting_status) override;
   bool FillsBoundsCompletely() const override;
   size_t GetApproximateUnsharedMemoryUsage() const override;
 
  private:
-  friend struct base::DefaultLazyInstanceTraits<EmptyContentLayerClient>;
+  friend struct base::LazyInstanceTraitsBase<EmptyContentLayerClient>;
 
   EmptyContentLayerClient();
   ~EmptyContentLayerClient() override;
 
   DISALLOW_COPY_AND_ASSIGN(EmptyContentLayerClient);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_EMPTY_CONTENT_LAYER_CLIENT_H_