CC Animation: Move files from cc_blink to Source/platform/animation

content/renderer/gpu/render_widget_compositor.cc

Index: content/renderer/gpu/render_widget_compositor.cc
diff --git a/content/renderer/gpu/render_widget_compositor.cc b/content/renderer/gpu/render_widget_compositor.cc
index 0f049dfe09dbda98adc7a60a15ff1e91b028c89a..86a5167c412579f047979363ac9457d719f0af46 100644
--- a/content/renderer/gpu/render_widget_compositor.cc
+++ b/content/renderer/gpu/render_widget_compositor.cc
@@ -24,7 +24,6 @@
 #include "cc/animation/animation_host.h"
 #include "cc/animation/animation_timeline.h"
 #include "cc/base/switches.h"
-#include "cc/blink/web_compositor_animation_timeline_impl.h"
 #include "cc/blink/web_layer_impl.h"
 #include "cc/debug/layer_tree_debug_state.h"
 #include "cc/debug/micro_benchmark.h"
@@ -608,21 +607,16 @@ void RenderWidgetCompositor::clearRootLayer() {
 }
 
 void RenderWidgetCompositor::attachCompositorAnimationTimeline(
-    blink::WebCompositorAnimationTimeline* compositor_timeline) {
-  DCHECK(compositor_timeline);
+    cc::AnimationTimeline* compositor_timeline) {
   DCHECK(layer_tree_host_->animation_host());
-  layer_tree_host_->animation_host()->AddAnimationTimeline(
-      static_cast<const cc_blink::WebCompositorAnimationTimelineImpl*>(
-          compositor_timeline)->animation_timeline());
+  layer_tree_host_->animation_host()->AddAnimationTimeline(compositor_timeline);
 }
 
 void RenderWidgetCompositor::detachCompositorAnimationTimeline(
-    blink::WebCompositorAnimationTimeline* compositor_timeline) {
-  DCHECK(compositor_timeline);
+    cc::AnimationTimeline* compositor_timeline) {
   DCHECK(layer_tree_host_->animation_host());
   layer_tree_host_->animation_host()->RemoveAnimationTimeline(
-      static_cast<const cc_blink::WebCompositorAnimationTimelineImpl*>(
-          compositor_timeline)->animation_timeline());
+      compositor_timeline);
 }
 
 void RenderWidgetCompositor::setViewportSize(