cc: Remove DrawQuad::IterateResoruces

cc/quads/checkerboard_draw_quad.cc

 // 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.
 
 #include "cc/quads/checkerboard_draw_quad.h"
 
 #include "base/logging.h"
 #include "base/trace_event/trace_event_argument.h"
 #include "base/values.h"
 
@@ skipping 21 matching lines @@
                                   const gfx::Rect& visible_rect,
                                   bool needs_blending,
                                   SkColor color,
                                   float scale) {
   DrawQuad::SetAll(shared_quad_state, DrawQuad::CHECKERBOARD, rect, opaque_rect,
                    visible_rect, needs_blending);
   this->color = color;
   this->scale = scale;
 }
 
-void CheckerboardDrawQuad::IterateResources(
-    const ResourceIteratorCallback& callback) {}
-
 const CheckerboardDrawQuad* CheckerboardDrawQuad::MaterialCast(
     const DrawQuad* quad) {
   DCHECK(quad->material == DrawQuad::CHECKERBOARD);
   return static_cast<const CheckerboardDrawQuad*>(quad);
 }
 
 void CheckerboardDrawQuad::ExtendValue(
     base::trace_event::TracedValue* value) const {
   value->SetInteger("color", color);
   value->SetDouble("scale", scale);
 }
 
 }  // namespace cc