cc: Set up the framework to restrict access to Layer internals.

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("//build/config/ui.gni")
 import("//testing/test.gni")
 
 component("cc") {
   sources = [
     "animation/animation.cc",
@@ skipping 639 matching lines @@
     "test/fake_tile_manager_client.cc",
     "test/fake_tile_manager_client.h",
     "test/fake_tile_task_manager.cc",
     "test/fake_tile_task_manager.h",
     "test/fake_ui_resource_layer_tree_host_impl.cc",
     "test/fake_ui_resource_layer_tree_host_impl.h",
     "test/fake_video_frame_provider.cc",
     "test/fake_video_frame_provider.h",
     "test/geometry_test_utils.cc",
     "test/geometry_test_utils.h",
+    "test/layer_internals_for_test.cc",
+    "test/layer_internals_for_test.h",
     "test/layer_test_common.cc",
     "test/layer_test_common.h",
     "test/layer_tree_host_common_test.cc",
     "test/layer_tree_host_common_test.h",
     "test/layer_tree_json_parser.cc",
     "test/layer_tree_json_parser.h",
     "test/layer_tree_pixel_resource_test.cc",
     "test/layer_tree_pixel_resource_test.h",
     "test/layer_tree_pixel_test.cc",
     "test/layer_tree_pixel_test.h",
@@ skipping 360 matching lines @@
     "//ui/gfx/geometry",
     "//ui/gl",
     "//ui/gl:test_support",
   ]
 
   # This target should not require the Chrome executable to run.
   assert_no_deps = [ "//chrome" ]
 }
 # When adding support for isolates, please have a look at run-time dependencies
 # in the cc_unittests_run target in cc_tests.gyp.