CC Animation: Rename Active Players to Ticking Players.

cc/test/layer_tree_test.cc

Index: cc/test/layer_tree_test.cc
diff --git a/cc/test/layer_tree_test.cc b/cc/test/layer_tree_test.cc
index d51b8c491605d04a8dc1583531424379cd3282d5..740880a2d5f18c9d42083a34cee7e36988225fe1 100644
--- a/cc/test/layer_tree_test.cc
+++ b/cc/test/layer_tree_test.cc
@@ -239,8 +239,8 @@ class LayerTreeHostImplForTesting : public LayerTreeHostImpl {
   void UpdateAnimationState(bool start_ready_animations) override {
     LayerTreeHostImpl::UpdateAnimationState(start_ready_animations);
     bool has_unfinished_animation = false;
-    for (const auto& it : animation_host()->active_players_for_testing()) {
-      if (it->HasActiveAnimation()) {
+    for (const auto& it : animation_host()->ticking_players_for_testing()) {
+      if (it->HasTickingAnimation()) {
         has_unfinished_animation = true;
         break;
       }