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

third_party/WebKit/Source/core/css/MediaQueryEvaluator.cpp

 /*
  * CSS Media Query Evaluator
  *
  * Copyright (C) 2006 Kimmo Kinnunen <kimmo.t.kinnunen@nokia.com>.
  * Copyright (C) 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2013 Intel Corporation. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
@@ skipping 799 matching lines @@
 }
 
 bool MediaQueryEvaluator::eval(const MediaQueryExp* expr) const {
   if (!m_mediaValues || !m_mediaValues->hasValues())
     return true;
 
   DCHECK(gFunctionMap);
 
   // Call the media feature evaluation function. Assume no prefix and let
   // trampoline functions override the prefix if prefix is used.
-  EvalFunc func = gFunctionMap->get(expr->mediaFeature().impl());
+  EvalFunc func = gFunctionMap->at(expr->mediaFeature().impl());
   if (func)
     return func(expr->expValue(), NoPrefix, *m_mediaValues);
 
   return false;
 }
 
 }  // namespace blink