Avoid WTF::Vector::at() and operator[] in core/dom.

third_party/WebKit/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 89 matching lines @@
       if (event && event->interfaceName() == eventInterfaceFilter) {
         m_perFrameEvents.remove(eventTargetKey(event.get()));
         events.append(event.release());
       } else {
         remaining.append(event.release());
       }
     }
     remaining.swap(m_eventQueue);
   }
 
-  for (size_t i = 0; i < events.size(); ++i) {
-    EventTarget* eventTarget = events[i]->target();
+  for (const auto& event : events) {
+    EventTarget* eventTarget = event->target();
     // FIXME: we should figure out how to make dispatchEvent properly virtual to
     // avoid special casting window.
     // FIXME: We should not fire events for nodes that are no longer in the
     // tree.
     InspectorInstrumentation::AsyncTask asyncTask(
-        eventTarget->getExecutionContext(), events[i]);
+        eventTarget->getExecutionContext(), event);
     if (LocalDOMWindow* window = eventTarget->toLocalDOMWindow())
-      window->dispatchEvent(events[i], nullptr);
+      window->dispatchEvent(event, nullptr);
     else
-      eventTarget->dispatchEvent(events[i]);
+      eventTarget->dispatchEvent(event);
   }
 }
 
 void ScriptedAnimationController::executeCallbacks(double monotonicTimeNow) {
   // dispatchEvents() runs script which can cause the document to be destroyed.
   if (!m_document)
     return;
 
   double highResNowMs =
       1000.0 *
@@ skipping 50 matching lines @@
 }
 
 void ScriptedAnimationController::enqueuePerFrameEvent(Event* event) {
   if (!m_perFrameEvents.add(eventTargetKey(event)).isNewEntry)
     return;
   enqueueEvent(event);
 }
 
 void ScriptedAnimationController::enqueueMediaQueryChangeListeners(
     HeapVector<Member<MediaQueryListListener>>& listeners) {
-  for (size_t i = 0; i < listeners.size(); ++i) {
-    m_mediaQueryListListeners.add(listeners[i]);
+  for (const auto& listener : listeners) {
+    m_mediaQueryListListeners.add(listener);
   }
   scheduleAnimationIfNeeded();
 }
 
 void ScriptedAnimationController::scheduleAnimationIfNeeded() {
   if (!hasScheduledItems())
     return;
 
   if (!m_document)
     return;
 
   if (FrameView* frameView = m_document->view())
     frameView->scheduleAnimation();
 }
 
 }  // namespace blink