Switch cc to std::unordered_*.

cc/layers/layer.h

 // Copyright 2010 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_LAYER_H_
 #define CC_LAYERS_LAYER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <set>
 #include <string>
+#include <unordered_map>
 #include <vector>
 
 #include "base/callback.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/observer_list.h"
 #include "cc/animation/layer_animation_controller.h"
 #include "cc/animation/layer_animation_value_observer.h"
 #include "cc/animation/layer_animation_value_provider.h"
 #include "cc/base/cc_export.h"
@@ skipping 53 matching lines @@
 class LayerProperties;
 class LayerUpdate;
 }  // namespace proto
 
 // Base class for composited layers. Special layer types are derived from
 // this class.
 class CC_EXPORT Layer : public base::RefCounted<Layer>,
                         public LayerAnimationValueObserver,
                         public LayerAnimationValueProvider {
  public:
-  typedef LayerList LayerListType;
-  typedef base::hash_map<int, scoped_refptr<Layer>> LayerIdMap;
+  using LayerListType = LayerList;
+  using LayerIdMap = std::unordered_map<int, scoped_refptr<Layer>>;
 
   enum LayerIdLabels {
     INVALID_ID = -1,
   };
 
   static scoped_refptr<Layer> Create(const LayerSettings& settings);
 
   int id() const { return layer_id_; }
 
   Layer* RootLayer();
@@ skipping 689 matching lines @@
 
   std::vector<FrameTimingRequest> frame_timing_requests_;
   bool frame_timing_requests_dirty_;
 
   DISALLOW_COPY_AND_ASSIGN(Layer);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_LAYER_H_