Update from https://crrev.com/308996

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 60 matching lines @@
     "base/util.h",
     "debug/benchmark_instrumentation.cc",
     "debug/benchmark_instrumentation.h",
     "debug/debug_colors.cc",
     "debug/debug_colors.h",
     "debug/debug_rect_history.cc",
     "debug/debug_rect_history.h",
     "debug/devtools_instrumentation.h",
     "debug/frame_rate_counter.cc",
     "debug/frame_rate_counter.h",
+    "debug/frame_viewer_instrumentation.cc",
     "debug/frame_viewer_instrumentation.h",
     "debug/invalidation_benchmark.cc",
     "debug/invalidation_benchmark.h",
     "debug/lap_timer.cc",
     "debug/lap_timer.h",
     "debug/layer_tree_debug_state.cc",
     "debug/layer_tree_debug_state.h",
     "debug/micro_benchmark.cc",
     "debug/micro_benchmark.h",
     "debug/micro_benchmark_impl.cc",
@@ skipping 355 matching lines @@
     "resources/transparency_display_item.h",
     "resources/ui_resource_bitmap.cc",
     "resources/ui_resource_bitmap.h",
     "resources/ui_resource_client.h",
     "resources/ui_resource_request.cc",
     "resources/ui_resource_request.h",
     "resources/zero_copy_tile_task_worker_pool.cc",
     "resources/zero_copy_tile_task_worker_pool.h",
     "scheduler/begin_frame_source.cc",
     "scheduler/begin_frame_source.h",
+    "scheduler/commit_earlyout_reason.h",
     "scheduler/delay_based_time_source.cc",
     "scheduler/delay_based_time_source.h",
     "scheduler/draw_result.h",
     "scheduler/scheduler.cc",
     "scheduler/scheduler.h",
     "scheduler/scheduler_settings.cc",
     "scheduler/scheduler_settings.h",
     "scheduler/scheduler_state_machine.cc",
     "scheduler/scheduler_state_machine.h",
     "trees/blocking_task_runner.cc",
     "trees/blocking_task_runner.h",
     "trees/damage_tracker.cc",
     "trees/damage_tracker.h",
+    "trees/draw_property_utils.cc",
+    "trees/draw_property_utils.h",
     "trees/layer_sorter.cc",
     "trees/layer_sorter.h",
     "trees/layer_tree_host.cc",
     "trees/layer_tree_host.h",
     "trees/layer_tree_host_client.h",
     "trees/layer_tree_host_common.cc",
     "trees/layer_tree_host_common.h",
     "trees/layer_tree_host_impl.cc",
     "trees/layer_tree_host_impl.h",
     "trees/layer_tree_impl.cc",
     "trees/layer_tree_impl.h",
     "trees/layer_tree_settings.cc",
     "trees/layer_tree_settings.h",
     "trees/occlusion.cc",
     "trees/occlusion.h",
     "trees/occlusion_tracker.cc",
     "trees/occlusion_tracker.h",
+    "trees/property_tree.cc",
+    "trees/property_tree.h",
+    "trees/property_tree_builder.cc",
+    "trees/property_tree_builder.h",
     "trees/proxy.cc",
     "trees/proxy.h",
     "trees/proxy_timing_history.cc",
     "trees/proxy_timing_history.h",
     "trees/scoped_abort_remaining_swap_promises.h",
     "trees/single_thread_proxy.cc",
     "trees/single_thread_proxy.h",
     "trees/thread_proxy.cc",
     "trees/thread_proxy.h",
     "trees/tree_synchronizer.cc",
@@ skipping 38 matching lines @@
     "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",
     "test/fake_delegated_renderer_layer.cc",
     "test/fake_delegated_renderer_layer.h",
     "test/fake_delegated_renderer_layer_impl.cc",
     "test/fake_delegated_renderer_layer_impl.h",
+    "test/fake_external_begin_frame_source.cc",
+    "test/fake_external_begin_frame_source.h",
     "test/fake_impl_proxy.h",
     "test/fake_layer_tree_host.cc",
     "test/fake_layer_tree_host.h",
     "test/fake_layer_tree_host_client.cc",
     "test/fake_layer_tree_host_client.h",
     "test/fake_layer_tree_host_impl.cc",
     "test/fake_layer_tree_host_impl.h",
     "test/fake_layer_tree_host_impl_client.cc",
     "test/fake_layer_tree_host_impl_client.h",
     "test/fake_output_surface.cc",
@@ skipping 236 matching lines @@
     "trees/layer_tree_host_unittest_damage.cc",
     "trees/layer_tree_host_unittest_delegated.cc",
     "trees/layer_tree_host_unittest_occlusion.cc",
     "trees/layer_tree_host_unittest_no_message_loop.cc",
     "trees/layer_tree_host_unittest_picture.cc",
     "trees/layer_tree_host_unittest_proxy.cc",
     "trees/layer_tree_host_unittest_scroll.cc",
     "trees/layer_tree_impl_unittest.cc",
     "trees/occlusion_tracker_unittest.cc",
     "trees/occlusion_unittest.cc",
+    "trees/property_tree_unittest.cc",
     "trees/tree_synchronizer_unittest.cc",
 
     # Surfaces test files.
     "surfaces/surface_aggregator_test_helpers.cc",
     "surfaces/surface_aggregator_test_helpers.h",
     "surfaces/surface_aggregator_unittest.cc",
     "surfaces/surface_unittest.cc",
     "surfaces/surfaces_pixeltest.cc",
 
     # Setup.
@@ skipping 47 matching lines @@
     "//gpu/command_buffer/common:gles2_utils",
     "//skia",
     "//testing/gmock",
     "//testing/gtest",
     "//testing/perf",
     "//ui/gfx",
     "//ui/gfx/geometry",
     "//ui/gl",
   ]
 }