cc: Switch ListContainer to use composition instead of inheritance.

cc/cc.gyp

 # Copyright (c) 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'targets': [
     {
@@ skipping 62 matching lines @@
         'animation/transform_operation.h',
         'animation/transform_operations.cc',
         'animation/transform_operations.h',
         'base/completion_event.h',
         'base/delayed_unique_notifier.cc',
         'base/delayed_unique_notifier.h',
         'base/histograms.cc',
         'base/histograms.h',
         'base/invalidation_region.cc',
         'base/invalidation_region.h',
-        'base/list_container.cc',
         'base/list_container.h',
+        'base/list_container_helper.cc',
+        'base/list_container_helper.h',
         'base/math_util.cc',
         'base/math_util.h',
         'base/region.cc',
         'base/region.h',
         'base/resource_id.h',
         'base/rolling_time_delta_history.cc',
         'base/rolling_time_delta_history.h',
         'base/scoped_ptr_algorithm.h',
         'base/scoped_ptr_deque.h',
         'base/scoped_ptr_vector.h',
@@ skipping 521 matching lines @@
         'surfaces/surface_resource_holder.cc',
         'surfaces/surface_resource_holder.h',
         'surfaces/surfaces_export.h',
       ],
       'includes': [
         '../build/android/increase_size_for_speed.gypi',
       ],
     },
   ],
 }