Use custom ListContainer to allocate DrawQuads

cc/layers/ui_resource_layer_impl_unittest.cc

 // Copyright 2013 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/layers/append_quads_data.h"
 #include "cc/layers/ui_resource_layer_impl.h"
 #include "cc/quads/draw_quad.h"
 #include "cc/resources/ui_resource_bitmap.h"
 #include "cc/resources/ui_resource_client.h"
 #include "cc/test/fake_impl_proxy.h"
@@ skipping 77 matching lines @@
                  const gfx::Rect& expected_opaque_bounds) {
   MockOcclusionTracker<LayerImpl> occlusion_tracker;
   scoped_ptr<RenderPass> render_pass = RenderPass::Create();
 
   AppendQuadsData data;
   layer->AppendQuads(render_pass.get(), occlusion_tracker, &data);
 
   // Verify quad rects
   const QuadList& quads = render_pass->quad_list;
   EXPECT_GE(quads.size(), (size_t)0);
-  gfx::Rect opaque_rect = quads.at(0)->opaque_rect;
+  gfx::Rect opaque_rect = quads.front()->opaque_rect;
   EXPECT_EQ(expected_opaque_bounds, opaque_rect);
 }
 
 TEST(UIResourceLayerImplTest, VerifySetOpaqueOnSkBitmap) {
   FakeImplProxy proxy;
   TestSharedBitmapManager shared_bitmap_manager;
   FakeUIResourceLayerTreeHostImpl host_impl(&proxy, &shared_bitmap_manager);
 
   gfx::Size bitmap_size(100, 100);
   gfx::Size layer_size(100, 100);;
@@ skipping 92 matching lines @@
         occluded,
         &partially_occluded_count);
     // The layer outputs one quad, which is partially occluded.
     EXPECT_EQ(1u, impl.quad_list().size());
     EXPECT_EQ(1u, partially_occluded_count);
   }
 }
 
 }  // namespace
 }  // namespace cc