CC Animations: Establish AnimationHost, AnimationTimeline and AnimationPlayer

cc/BUILD.gn

Index: cc/BUILD.gn
diff --git a/cc/BUILD.gn b/cc/BUILD.gn
index 814de18e23a0d10254bdae35924d36ce4833c4c7..6a9fc89aaa4e1fb1fdc6e3b89fef47567d935639 100644
--- a/cc/BUILD.gn
+++ b/cc/BUILD.gn
@@ -13,10 +13,16 @@ component("cc") {
     "animation/animation_delegate.h",
     "animation/animation_events.cc",
     "animation/animation_events.h",
+    "animation/animation_host.cc",
+    "animation/animation_host.h",
     "animation/animation_id_provider.cc",
     "animation/animation_id_provider.h",
+    "animation/animation_player.cc",
+    "animation/animation_player.h",
     "animation/animation_registrar.cc",
     "animation/animation_registrar.h",
+    "animation/animation_timeline.cc",
+    "animation/animation_timeline.h",
     "animation/keyframed_animation_curve.cc",
     "animation/keyframed_animation_curve.h",
     "animation/layer_animation_controller.cc",
@@ -499,6 +505,7 @@ component("cc") {
     "trees/layer_tree_host_single_thread_client.h",
     "trees/layer_tree_impl.cc",
     "trees/layer_tree_impl.h",
+    "trees/layer_tree_mutators_client.h",
     "trees/layer_tree_settings.cc",
     "trees/layer_tree_settings.h",
     "trees/occlusion.cc",
@@ -723,6 +730,9 @@ source_set("test_support") {
 
 test("cc_unittests") {
   sources = [
+    "animation/animation_host_unittest.cc",
+    "animation/animation_player_unittest.cc",
+    "animation/animation_timeline_unittest.cc",
     "animation/animation_unittest.cc",
     "animation/keyframed_animation_curve_unittest.cc",
     "animation/layer_animation_controller_unittest.cc",
@@ -828,6 +838,7 @@ test("cc_unittests") {
     "trees/layer_tree_host_pixeltest_synchronous.cc",
     "trees/layer_tree_host_unittest.cc",
     "trees/layer_tree_host_unittest_animation.cc",
+    "trees/layer_tree_host_unittest_animation_timelines.cc",
     "trees/layer_tree_host_unittest_context.cc",
     "trees/layer_tree_host_unittest_copyrequest.cc",
     "trees/layer_tree_host_unittest_damage.cc",