Remove parts of //cc we aren't using

cc/resources/raster_tile_priority_queue.h

Index: cc/resources/raster_tile_priority_queue.h
diff --git a/cc/resources/raster_tile_priority_queue.h b/cc/resources/raster_tile_priority_queue.h
deleted file mode 100644
index 5ee99f1cc44b406e1989270444db575259316a12..0000000000000000000000000000000000000000
--- a/cc/resources/raster_tile_priority_queue.h
+++ /dev/null
@@ -1,42 +0,0 @@
-// 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_RESOURCES_RASTER_TILE_PRIORITY_QUEUE_H_
-#define CC_RESOURCES_RASTER_TILE_PRIORITY_QUEUE_H_
-
-#include <vector>
-
-#include "cc/base/cc_export.h"
-#include "cc/layers/picture_layer_impl.h"
-#include "cc/resources/tile_priority.h"
-
-namespace cc {
-class Tile;
-
-class CC_EXPORT RasterTilePriorityQueue {
- public:
-  enum class Type { ALL, REQUIRED_FOR_ACTIVATION, REQUIRED_FOR_DRAW };
-
-  // TODO(vmpstr): Make this work with PictureLayerTilingSet pairs instead.
-  static scoped_ptr<RasterTilePriorityQueue> Create(
-      const std::vector<PictureLayerImpl::Pair>& paired_layers,
-      TreePriority tree_priority,
-      Type type);
-
-  virtual ~RasterTilePriorityQueue() {}
-
-  virtual bool IsEmpty() const = 0;
-  virtual Tile* Top() = 0;
-  virtual void Pop() = 0;
-
- protected:
-  RasterTilePriorityQueue() {}
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(RasterTilePriorityQueue);
-};
-
-}  // namespace cc
-
-#endif  // CC_RESOURCES_RASTER_TILE_PRIORITY_QUEUE_H_