ScriptedAnimationController: factor out has-schedulable items predicate.

Source/core/dom/ScriptedAnimationController.cpp

 /*
  * Copyright (C) 2011 Google Inc. All Rights Reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 133 matching lines @@
 void ScriptedAnimationController::callMediaQueryListListeners()
 {
     MediaQueryListListeners listeners;
     listeners.swap(m_mediaQueryListListeners);
 
     for (const auto& listener : listeners) {
         listener->notifyMediaQueryChanged();
     }
 }
 
+bool ScriptedAnimationController::hasScheduledItems() const
+{
+    if (m_suspendCount)
+        return false;
+
+    return !m_callbackCollection.isEmpty() || !m_eventQueue.isEmpty() || !m_mediaQueryListListeners.isEmpty();
+}
+
 void ScriptedAnimationController::serviceScriptedAnimations(double monotonicTimeNow)
 {
-    if (m_callbackCollection.isEmpty() && !m_eventQueue.size() && !m_mediaQueryListListeners.size())
-        return;
-
-    if (m_suspendCount)
+    if (!hasScheduledItems())
         return;
 
     RefPtrWillBeRawPtr<ScriptedAnimationController> protect(this);
 
     callMediaQueryListListeners();
     dispatchEvents();
     executeCallbacks(monotonicTimeNow);
 
     scheduleAnimationIfNeeded();
 }
@@ skipping 15 matching lines @@
 void ScriptedAnimationController::enqueueMediaQueryChangeListeners(WillBeHeapVector<RefPtrWillBeMember<MediaQueryListListener>>& listeners)
 {
     for (size_t i = 0; i < listeners.size(); ++i) {
         m_mediaQueryListListeners.add(listeners[i]);
     }
     scheduleAnimationIfNeeded();
 }
 
 void ScriptedAnimationController::scheduleAnimationIfNeeded()
 {
+    if (!hasScheduledItems())
+        return;
+
     if (!m_document)
         return;
 
-    if (m_suspendCount)
-        return;
-
-    if (m_callbackCollection.isEmpty() && !m_eventQueue.size() && !m_mediaQueryListListeners.size())
-        return;
-
     if (FrameView* frameView = m_document->view())
         frameView->scheduleAnimation();
 }
 
 }