CC Animation: Rename has_any_animation and make implementattion out-of-line

cc/animation/animation_player.h

Index: cc/animation/animation_player.h
diff --git a/cc/animation/animation_player.h b/cc/animation/animation_player.h
index 1afdbfb522a8d2ed1353a1eaa78151544e9f1364..b20e0be217688723727f202a70a0ad64af268135 100644
--- a/cc/animation/animation_player.h
+++ b/cc/animation/animation_player.h
@@ -88,10 +88,8 @@ class CC_EXPORT AnimationPlayer : public base::RefCounted<AnimationPlayer> {
                                double animation_start_time,
                                std::unique_ptr<AnimationCurve> curve);
 
-  // Whether this player has animations waiting to get sent to ElementAnimations
-  bool has_pending_animations_for_testing() const {
-    return !animations_.empty();
-  }
+  // Returns true if there are any animations at all to process.
+  bool has_any_animation() const { return !animations_.empty(); }
 
   bool needs_push_properties() const { return needs_push_properties_; }
   void SetNeedsPushProperties();