Use Custome ListContainer to Allocate SharedQuadState

cc/layers/picture_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/picture_layer_impl.h"
 
 #include <algorithm>
 #include <limits>
 #include <set>
 #include <utility>
@@ skipping 3483 matching lines @@
                               SK_MScalar1 / max_contents_scale);
 
   AppendQuadsData data;
   active_layer_->AppendQuads(render_pass.get(), occlusion_tracker, &data);
 
   // SharedQuadState should have be of size 1, as we are doing AppenQuad once.
   EXPECT_EQ(1u, render_pass->shared_quad_state_list.size());
   // The content_to_target_transform should be scaled by the
   // MaximumTilingContentsScale on the layer.
   EXPECT_EQ(scaled_draw_transform.ToString(),
-            render_pass->shared_quad_state_list[0]
+            render_pass->shared_quad_state_list.front()
                 ->content_to_target_transform.ToString());
   // The content_bounds should be scaled by the
   // MaximumTilingContentsScale on the layer.
-  EXPECT_EQ(gfx::Size(2500u, 5000u).ToString(),
-            render_pass->shared_quad_state_list[0]->content_bounds.ToString());
+  EXPECT_EQ(
+      gfx::Size(2500u, 5000u).ToString(),
+      render_pass->shared_quad_state_list.front()->content_bounds.ToString());
   // The visible_content_rect should be scaled by the
   // MaximumTilingContentsScale on the layer.
-  EXPECT_EQ(
-      gfx::Rect(0u, 0u, 2500u, 5000u).ToString(),
-      render_pass->shared_quad_state_list[0]->visible_content_rect.ToString());
+  EXPECT_EQ(gfx::Rect(0u, 0u, 2500u, 5000u).ToString(),
+            render_pass->shared_quad_state_list.front()
+                ->visible_content_rect.ToString());
 }
 
 TEST_F(PictureLayerImplTest, UpdateTilesForMasksWithNoVisibleContent) {
   gfx::Size tile_size(400, 400);
   gfx::Size bounds(100000, 100);
 
   host_impl_.CreatePendingTree();
 
   scoped_ptr<LayerImpl> root = LayerImpl::Create(host_impl_.pending_tree(), 1);
 
@@ skipping 876 matching lines @@
   SetupPendingTree(pending_pile2);
   ActivateTree();
 
   // We've switched to a solid color, so we should end up with no tilings.
   ASSERT_TRUE(active_layer_->tilings());
   EXPECT_EQ(0u, active_layer_->tilings()->num_tilings());
 }
 
 }  // namespace
 }  // namespace cc