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

third_party/WebKit/Source/platform/fonts/GlyphMetricsMap.h

 /*
  * Copyright (C) 2006, 2009 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 98 matching lines @@
 template <class T>
 typename GlyphMetricsMap<T>::GlyphMetricsPage*
 GlyphMetricsMap<T>::locatePageSlowCase(unsigned pageNumber) {
   GlyphMetricsPage* page;
   if (!pageNumber) {
     ASSERT(!m_filledPrimaryPage);
     page = &m_primaryPage;
     m_filledPrimaryPage = true;
   } else {
     if (m_pages) {
-      page = m_pages->get(pageNumber);
+      page = m_pages->at(pageNumber);
       if (page)
         return page;
     } else {
       m_pages =
           WTF::wrapUnique(new HashMap<int, std::unique_ptr<GlyphMetricsPage>>);
     }
     page = new GlyphMetricsPage;
     m_pages->set(pageNumber, WTF::wrapUnique(page));
   }
 
   // Fill in the whole page with the unknown glyph information.
   for (unsigned i = 0; i < GlyphMetricsPage::size; i++)
     page->setMetricsForIndex(i, unknownMetrics());
 
   return page;
 }
 
 }  // namespace blink
 
 #endif