cc: Use a ListContainer for DisplayItemList to reduce allocations.

cc/BUILD.gn

 # Copyright 2014 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.
 
 import("//testing/test.gni")
 
 component("cc") {
   sources = [
     "animation/animation.cc",
     "animation/animation.h",
@@ skipping 335 matching lines @@
     "resources/filter_display_item.cc",
     "resources/filter_display_item.h",
     "resources/float_clip_display_item.cc",
     "resources/float_clip_display_item.h",
     "resources/gpu_rasterizer.cc",
     "resources/gpu_rasterizer.h",
     "resources/gpu_tile_task_worker_pool.cc",
     "resources/gpu_tile_task_worker_pool.h",
     "resources/image_layer_updater.cc",
     "resources/image_layer_updater.h",
+    "resources/largest_display_item.cc",
+    "resources/largest_display_item.h",
     "resources/layer_painter.h",
     "resources/layer_quad.cc",
     "resources/layer_quad.h",
     "resources/layer_tiling_data.cc",
     "resources/layer_tiling_data.h",
     "resources/layer_updater.cc",
     "resources/layer_updater.h",
     "resources/memory_history.cc",
     "resources/memory_history.h",
     "resources/one_copy_tile_task_worker_pool.cc",
@@ skipping 551 matching lines @@
     "//testing/gmock",
     "//testing/gtest",
     "//testing/perf",
     "//ui/gfx",
     "//ui/gfx/geometry",
     "//ui/gl",
   ]
 }
 # When adding support for isolates, please have a look at run-time dependencies
 # in the cc_unittests_run target in cc_tests.gyp.