Fixing and enhancing OrderedSimpleTaskRunner to allow 100% deterministic 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.
 
 component("cc") {
   sources = [
     "animation/animation.cc",
     "animation/animation.h",
     "animation/animation_curve.cc",
     "animation/animation_curve.h",
@@ skipping 573 matching lines @@
     "test/skia_common.cc",
     "test/skia_common.h",
     "test/solid_color_content_layer_client.cc",
     "test/solid_color_content_layer_client.h",
     "test/test_context_provider.cc",
     "test/test_context_provider.h",
     "test/test_context_support.cc",
     "test/test_context_support.h",
     "test/test_gles2_interface.cc",
     "test/test_gles2_interface.h",
+    "test/test_now_source.cc",
+    "test/test_now_source.h",
     "test/test_occlusion_tracker.h",
     "test/test_shared_bitmap_manager.cc",
     "test/test_shared_bitmap_manager.h",
     "test/test_texture.cc",
     "test/test_texture.h",
     "test/test_tile_priorities.cc",
     "test/test_tile_priorities.h",
     "test/test_web_graphics_context_3d.cc",
     "test/test_web_graphics_context_3d.h",
     "test/tiled_layer_test_common.cc",
@@ skipping 193 matching lines @@
     "//gpu/command_buffer/common:gles2_utils",
     "//media",
     "//skia",
     "//testing/gmock",
     "//testing/gtest",
     "//testing/perf",
     "//ui/gfx",
     "//ui/gfx/geometry",
   ]
 }