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

third_party/WebKit/Source/core/html/parser/HTMLConstructionSite.cpp

 /*
  * Copyright (C) 2010 Google, Inc. All Rights Reserved.
  * Copyright (C) 2011 Apple 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
@@ skipping 303 matching lines @@
   // after executing all other queued tasks.
   const size_t size = m_taskQueue.size();
   if (!size)
     return;
 
   // Copy the task queue into a local variable in case executeTask re-enters the
   // parser.
   TaskQueue queue;
   queue.swap(m_taskQueue);
 
-  for (size_t i = 0; i < size; ++i)
-    executeTask(queue[i]);
+  for (auto& task : queue)
+    executeTask(task);
 
   // We might be detached now.
 }
 
 HTMLConstructionSite::HTMLConstructionSite(
     HTMLParserReentryPermit* reentryPermit,
     Document& document,
     ParserContentPolicy parserContentPolicy)
     : m_reentryPermit(reentryPermit),
       m_document(&document),
@@ skipping 64 matching lines @@
   executeQueuedTasks();
   element->insertedByParser();
 }
 
 void HTMLConstructionSite::mergeAttributesFromTokenIntoElement(
     AtomicHTMLToken* token,
     Element* element) {
   if (token->attributes().isEmpty())
     return;
 
-  for (unsigned i = 0; i < token->attributes().size(); ++i) {
-    const Attribute& tokenAttribute = token->attributes().at(i);
+  for (const auto& tokenAttribute : token->attributes()) {
     if (element->attributesWithoutUpdate().findIndex(tokenAttribute.name()) ==
         kNotFound)
       element->setAttribute(tokenAttribute.name(), tokenAttribute.value());
   }
 }
 
 void HTMLConstructionSite::insertHTMLHtmlStartTagInBody(
     AtomicHTMLToken* token) {
   // Fragments do not have a root HTML element, so any additional HTML elements
   // encountered during fragment parsing should be ignored.
@@ skipping 650 matching lines @@
   ASSERT(task.parent);
   queueTask(task);
 }
 
 DEFINE_TRACE(HTMLConstructionSite::PendingText) {
   visitor->trace(parent);
   visitor->trace(nextChild);
 }
 
 }  // namespace blink