CC Animation: Extract PropertyAnimationState as a non-nested struct.

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.
 
 import("//build/config/ui.gni")
 import("//testing/test.gni")
 
 component("cc") {
   sources = [
     "animation/animation.cc",
@@ skipping 10 matching lines @@
     "animation/animation_player.cc",
     "animation/animation_player.h",
     "animation/animation_timeline.cc",
     "animation/animation_timeline.h",
     "animation/element_animations.cc",
     "animation/element_animations.h",
     "animation/element_id.cc",
     "animation/element_id.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",
@@ skipping 1020 matching lines @@
     "//ui/gl:test_support",
   ]
 
   # This target should not require the Chrome executable to run.
   assert_no_deps = [ "//chrome" ]
 
   data = [
     "test/data/",
   ]
 }