Switch cc to std::unordered_*.

cc/surfaces/surface_resource_holder.h

 // Copyright 2014 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_SURFACE_RESOURCE_HOLDER_H_
 #define CC_SURFACES_SURFACE_RESOURCE_HOLDER_H_
 
-#include "base/containers/hash_tables.h"
+#include <unordered_map>
+
 #include "base/macros.h"
 #include "cc/base/resource_id.h"
 #include "cc/resources/returned_resource.h"
 #include "cc/resources/transferable_resource.h"
 #include "cc/surfaces/surfaces_export.h"
 
 namespace cc {
 class SurfaceFactoryClient;
 
 // A SurfaceResourceHolder manages the lifetime of resources submitted by a
@@ skipping 14 matching lines @@
 
   struct ResourceRefs {
     ResourceRefs();
 
     int refs_received_from_child;
     int refs_holding_resource_alive;
   };
   // Keeps track of the number of users currently in flight for each resource
   // ID we've received from the client. When this counter hits zero for a
   // particular resource, that ID is available to return to the client.
-  typedef base::hash_map<ResourceId, ResourceRefs> ResourceIdCountMap;
+  using ResourceIdCountMap = std::unordered_map<ResourceId, ResourceRefs>;
   ResourceIdCountMap resource_id_use_count_map_;
 
   DISALLOW_COPY_AND_ASSIGN(SurfaceResourceHolder);
 };
 
 }  // namespace cc
 
 #endif  // CC_SURFACES_SURFACE_RESOURCE_HOLDER_H_