CC Animation: Rename Active Players to Ticking Players.

cc/trees/layer_tree_host_impl.cc

Index: cc/trees/layer_tree_host_impl.cc
diff --git a/cc/trees/layer_tree_host_impl.cc b/cc/trees/layer_tree_host_impl.cc
index b8fff40ebdf36eee772373aee8558f1614b1456b..e949b16183970af27e11ae9c8db5d1234da77c32 100644
--- a/cc/trees/layer_tree_host_impl.cc
+++ b/cc/trees/layer_tree_host_impl.cc
@@ -1555,7 +1555,7 @@ CompositorFrameMetadata LayerTreeHostImpl::MakeCompositorFrameMetadata() const {
 
   if (GetDrawMode() == DRAW_MODE_RESOURCELESS_SOFTWARE) {
     metadata.is_resourceless_software_draw_with_scroll_or_animation =
-        IsActivelyScrolling() || mutator_host_->NeedsAnimateLayers();
+        IsActivelyScrolling() || mutator_host_->NeedsTickAnimations();
   }
 
   for (LayerImpl* surface_layer : active_tree_->SurfaceLayers()) {
@@ -3441,7 +3441,7 @@ bool LayerTreeHostImpl::AnimateScrollbars(base::TimeTicks monotonic_time) {
 }
 
 bool LayerTreeHostImpl::AnimateLayers(base::TimeTicks monotonic_time) {
-  const bool animated = mutator_host_->AnimateLayers(monotonic_time);
+  const bool animated = mutator_host_->TickAnimations(monotonic_time);
 
   // TODO(crbug.com/551134): Only do this if the animations are on the active
   // tree, or if they are on the pending tree waiting for some future time to