Switch cc to std::unordered_*.

cc/tiles/image_decode_controller.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_TILES_IMAGE_DECODE_CONTROLLER_H_
 #define CC_TILES_IMAGE_DECODE_CONTROLLER_H_
 
 #include <stdint.h>
 
-#include "base/containers/hash_tables.h"
+#include <unordered_map>
+
 #include "base/memory/ref_counted.h"
 #include "cc/base/cc_export.h"
 #include "cc/playback/discardable_image_map.h"
 #include "cc/raster/tile_task_runner.h"
 #include "skia/ext/refptr.h"
 
 namespace cc {
 
 class ImageDecodeController {
  public:
@@ skipping 14 matching lines @@
 
   void OnImageDecodeTaskCompleted(int layer_id,
                                   const SkImage* image,
                                   bool was_canceled);
 
  private:
   scoped_refptr<ImageDecodeTask> CreateTaskForImage(const SkImage* image,
                                                     int layer_id,
                                                     uint64_t prepare_tiles_id);
 
-  using ImageTaskMap = base::hash_map<uint32_t, scoped_refptr<ImageDecodeTask>>;
-  using LayerImageTaskMap = base::hash_map<int, ImageTaskMap>;
+  using ImageTaskMap =
+      std::unordered_map<uint32_t, scoped_refptr<ImageDecodeTask>>;
+  using LayerImageTaskMap = std::unordered_map<int, ImageTaskMap>;
   LayerImageTaskMap image_decode_tasks_;
 
-  using LayerCountMap = base::hash_map<int, int>;
+  using LayerCountMap = std::unordered_map<int, int>;
   LayerCountMap used_layer_counts_;
 };
 
 }  // namespace cc
 
 #endif  // CC_TILES_IMAGE_DECODE_CONTROLLER_H_