cc: Remove TilingSetRasterQueue virtual base.

cc/resources/raster_tile_priority_queue_required.cc

 // 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.
 
 #include "cc/resources/raster_tile_priority_queue_required.h"
 
 #include "cc/resources/tiling_set_raster_queue_required.h"
 
 namespace cc {
 
@@ skipping 10 matching lines @@
   for (const auto& pair : paired_layers) {
     PictureLayerTilingSet* tiling_set = nullptr;
     if (type == Type::REQUIRED_FOR_DRAW && pair.active)
       tiling_set = pair.active->picture_layer_tiling_set();
     else if (type == Type::REQUIRED_FOR_ACTIVATION && pair.pending)
       tiling_set = pair.pending->picture_layer_tiling_set();
 
     if (!tiling_set)
       continue;
 
-    scoped_ptr<TilingSetRasterQueue> tiling_set_queue(
+    scoped_ptr<TilingSetRasterQueueRequired> tiling_set_queue(
         new TilingSetRasterQueueRequired(tiling_set, type));
     if (tiling_set_queue->IsEmpty())
       continue;
     tiling_set_queues_.push_back(tiling_set_queue.Pass());
   }
 }
 
 bool RasterTilePriorityQueueRequired::IsEmpty() const {
   return tiling_set_queues_.empty();
 }
 
 Tile* RasterTilePriorityQueueRequired::Top() {
   DCHECK(!IsEmpty());
   return tiling_set_queues_.back()->Top();
 }
 
 void RasterTilePriorityQueueRequired::Pop() {
   DCHECK(!IsEmpty());
   tiling_set_queues_.back()->Pop();
   if (tiling_set_queues_.back()->IsEmpty())
     tiling_set_queues_.pop_back();
 }
 
 }  // namespace cc