CC Animation: Move PropertyAnimationState and TargetProperty to trees.

cc/BUILD.gn

Index: cc/BUILD.gn
diff --git a/cc/BUILD.gn b/cc/BUILD.gn
index a5a859e12ee9d50d88f5f23c04e7f341d5039f72..a3622218d6a8fc3fc7e1d9be6ee3f3ba0fc274cb 100644
--- a/cc/BUILD.gn
+++ b/cc/BUILD.gn
@@ -26,16 +26,12 @@ component("cc") {
     "animation/element_animations.h",
     "animation/keyframed_animation_curve.cc",
     "animation/keyframed_animation_curve.h",
-    "animation/property_animation_state.cc",
-    "animation/property_animation_state.h",
     "animation/scroll_offset_animation_curve.cc",
     "animation/scroll_offset_animation_curve.h",
     "animation/scroll_offset_animations.cc",
     "animation/scroll_offset_animations.h",
     "animation/scroll_offset_animations_impl.cc",
     "animation/scroll_offset_animations_impl.h",
-    "animation/target_property.cc",
-    "animation/target_property.h",
     "animation/timing_function.cc",
     "animation/timing_function.h",
     "animation/transform_operation.cc",
@@ -535,6 +531,8 @@ component("cc") {
     "trees/occlusion.h",
     "trees/occlusion_tracker.cc",
     "trees/occlusion_tracker.h",
+    "trees/property_animation_state.cc",
+    "trees/property_animation_state.h",
     "trees/property_tree.cc",
     "trees/property_tree.h",
     "trees/property_tree_builder.cc",
@@ -555,6 +553,8 @@ component("cc") {
     "trees/swap_promise_manager.h",
     "trees/swap_promise_monitor.cc",
     "trees/swap_promise_monitor.h",
+    "trees/target_property.cc",
+    "trees/target_property.h",
     "trees/task_runner_provider.cc",
     "trees/task_runner_provider.h",
     "trees/threaded_channel.cc",