cc: Implement unified BeginFrame on aura

ui/compositor/BUILD.gn

Index: ui/compositor/BUILD.gn
diff --git a/ui/compositor/BUILD.gn b/ui/compositor/BUILD.gn
index dcc4782bec95615832760593d9f28297026031aa..6e1bf3fd51d5dfc841e3b5b9d7253c23dd2ee477 100644
--- a/ui/compositor/BUILD.gn
+++ b/ui/compositor/BUILD.gn
@@ -16,8 +16,6 @@ component("compositor") {
     "compositor_observer.h",
     "compositor_switches.cc",
     "compositor_switches.h",
-    "compositor_vsync_manager.cc",
-    "compositor_vsync_manager.h",
     "debug_utils.cc",
     "debug_utils.h",
     "dip_util.cc",
@@ -82,6 +80,8 @@ component("compositor") {
 source_set("test_support") {
   testonly = true
   sources = [
+    "test/compositor_test_api.cc",
+    "test/compositor_test_api.h",
     "test/context_factories_for_test.cc",
     "test/context_factories_for_test.h",
     "test/draw_waiter_for_test.cc",
@@ -144,6 +144,7 @@ source_set("test_support") {
 if (!is_android) {
   test("compositor_unittests") {
     sources = [
+      "compositor_unittest.cc",
       "layer_animation_element_unittest.cc",
       "layer_animation_sequence_unittest.cc",
       "layer_animator_unittest.cc",