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

third_party/WebKit/Source/core/style/StyleInheritedVariables.cpp

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/style/StyleInheritedVariables.h"
 
 #include "core/style/DataEquivalency.h"
 
 namespace blink {
 
 bool StyleInheritedVariables::operator==(
     const StyleInheritedVariables& other) const {
   // It's technically possible for divergent roots to be value-equal,
   // but unlikely. This equality operator is used for optimization purposes
   // so it's OK to be occasionally wrong.
   // TODO(shanestephens): Rename this to something that indicates it may not
   // always return equality.
   if (m_root != other.m_root)
     return false;
 
   if (m_data.size() != other.m_data.size())
     return false;
 
   for (const auto& iter : m_data) {
-    RefPtr<CSSVariableData> otherData = other.m_data.get(iter.key);
+    RefPtr<CSSVariableData> otherData = other.m_data.at(iter.key);
     if (!dataEquivalent(iter.value, otherData))
       return false;
   }
 
   return true;
 }
 
 StyleInheritedVariables::StyleInheritedVariables(
     StyleInheritedVariables& other) {
   if (!other.m_root) {
@@ skipping 46 matching lines @@
         new HashMap<AtomicString, RefPtr<CSSVariableData>>(m_root->m_data));
     for (auto it = m_data.begin(); it != m_data.end(); ++it)
       result->set(it->key, it->value);
   } else {
     result.reset(new HashMap<AtomicString, RefPtr<CSSVariableData>>(m_data));
   }
   return result;
 }
 
 }  // namespace blink