cc: Implement test task runner for tests.

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 670 matching lines @@
     "test/proxy_main_for_test.cc",
     "test/proxy_main_for_test.h",
     "test/remote_channel_impl_for_test.cc",
     "test/remote_channel_impl_for_test.h",
     "test/remote_proto_channel_bridge.cc",
     "test/remote_proto_channel_bridge.h",
     "test/render_pass_test_utils.cc",
     "test/render_pass_test_utils.h",
     "test/scheduler_test_common.cc",
     "test/scheduler_test_common.h",
+    "test/simple_task_runner.cc",
+    "test/simple_task_runner.h",
     "test/skia_common.cc",
     "test/skia_common.h",
     "test/solid_color_content_layer_client.cc",
     "test/solid_color_content_layer_client.h",
     "test/surface_aggregator_test_helpers.cc",
     "test/surface_aggregator_test_helpers.h",
     "test/surface_hittest_test_helpers.cc",
     "test/surface_hittest_test_helpers.h",
     "test/task_graph_runner_test_template.cc",
     "test/task_graph_runner_test_template.h",
@@ skipping 297 matching lines @@
     "//testing/gtest",
     "//testing/perf",
     "//ui/gfx",
     "//ui/gfx/geometry",
     "//ui/gl",
     "//ui/gl:test_support",
   ]
 }
 # When adding support for isolates, please have a look at run-time dependencies
 # in the cc_unittests_run target in cc_tests.gyp.