Initial surface aggregator implementation

cc/cc_tests.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,
     'cc_unit_tests_source_files': [
       'animation/animation_unittest.cc',
       'animation/keyframed_animation_curve_unittest.cc',
@@ skipping 88 matching lines @@
       'trees/layer_tree_host_unittest_occlusion.cc',
       'trees/layer_tree_host_unittest_picture.cc',
       'trees/layer_tree_host_unittest_scroll.cc',
       'trees/layer_tree_host_unittest_video.cc',
       'trees/occlusion_tracker_unittest.cc',
       'trees/quad_culler_unittest.cc',
       'trees/tree_synchronizer_unittest.cc',
     ],
     'cc_surfaces_unit_tests_source_files': [
       'surfaces/surface_unittest.cc',
+      'surfaces/surface_aggregator_unittest.cc',
+      'surfaces/surface_aggregator_test_helpers.cc',
+      'surfaces/surface_aggregator_test_helpers.h',
     ],
     'cc_tests_support_files': [
       'test/animation_test_common.cc',
       'test/animation_test_common.h',
       'test/fake_content_layer.cc',
       'test/fake_content_layer.h',
       'test/fake_content_layer_client.cc',
       'test/fake_content_layer_client.h',
       'test/fake_content_layer_impl.cc',
       'test/fake_content_layer_impl.h',
@@ skipping 263 matching lines @@
               'test_suite_name': 'cc_perftests',
               'input_shlib_path': '<(SHARED_LIB_DIR)/<(SHARED_LIB_PREFIX)cc_perftests<(SHARED_LIB_SUFFIX)',
             },
             'includes': [ '../build/apk_test.gypi' ],
           },
         ],
       }
     ]
   ],
 }