cc: Remove DrawQuad::IterateResoruces

cc/quads/tile_draw_quad.h

 // Copyright 2012 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_QUADS_TILE_DRAW_QUAD_H_
 #define CC_QUADS_TILE_DRAW_QUAD_H_
 
 #include "cc/quads/content_draw_quad_base.h"
 
 namespace cc {
@@ skipping 23 matching lines @@
               bool needs_blending,
               unsigned resource_id,
               // |tex_coord_rect| contains non-normalized coordinates.
               // TODO(reveman): Make the use of normalized vs non-normalized
               // coordinates consistent across all quad types: crbug.com/487370
               const gfx::RectF& tex_coord_rect,
               const gfx::Size& texture_size,
               bool swizzle_contents,
               bool nearest_neighbor);
 
-  unsigned resource_id;
-
-  void IterateResources(const ResourceIteratorCallback& callback) override;
-
   static const TileDrawQuad* MaterialCast(const DrawQuad*);
 
+  ResourceId resource_id() const { return resources.ids[kResourceIdIndex]; }
+
  private:
+  static const size_t kResourceIdIndex = 0;
+
   void ExtendValue(base::trace_event::TracedValue* value) const override;
 };
 
 }  // namespace cc
 
 #endif  // CC_QUADS_TILE_DRAW_QUAD_H_