Migrate WTF::HashMap::get() to ::at()

third_party/WebKit/Source/core/dom/ProcessingInstruction.cpp

 /*
  * Copyright (C) 2000 Peter Kelly (pmk@post.com)
  * Copyright (C) 2006, 2008, 2009 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 102 matching lines @@
   if (i != attrs.end())
     type = i->value;
 
   m_isCSS = type.isEmpty() || type == "text/css";
   m_isXSL = (type == "text/xml" || type == "text/xsl" ||
              type == "application/xml" || type == "application/xhtml+xml" ||
              type == "application/rss+xml" || type == "application/atom+xml");
   if (!m_isCSS && !m_isXSL)
     return false;
 
-  href = attrs.get("href");
-  charset = attrs.get("charset");
-  String alternate = attrs.get("alternate");
+  href = attrs.at("href");
+  charset = attrs.at("charset");
+  String alternate = attrs.at("alternate");
   m_alternate = alternate == "yes";
-  m_title = attrs.get("title");
-  m_media = attrs.get("media");
+  m_title = attrs.at("title");
+  m_media = attrs.at("media");
 
   return !m_alternate || !m_title.isEmpty();
 }
 
 void ProcessingInstruction::process(const String& href, const String& charset) {
   if (href.length() > 1 && href[0] == '#') {
     m_localHref = href.substring(1);
     // We need to make a synthetic XSLStyleSheet that is embedded.
     // It needs to be able to kick off import/include loads that
     // can hang off some parent sheet.
@@ skipping 153 matching lines @@
 }
 
 DEFINE_TRACE(ProcessingInstruction) {
   visitor->trace(m_sheet);
   visitor->trace(m_listenerForXSLT);
   CharacterData::trace(visitor);
   ResourceOwner<StyleSheetResource>::trace(visitor);
 }
 
 }  // namespace blink