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

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

 // Copyright 2016 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/StyleNonInheritedVariables.h"
 
 #include "core/style/DataEquivalency.h"
 
 namespace blink {
 
 bool StyleNonInheritedVariables::operator==(
     const StyleNonInheritedVariables& other) const {
   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;
 }
 
 CSSVariableData* StyleNonInheritedVariables::getVariable(
     const AtomicString& name) const {
-  return m_data.get(name);
+  return m_data.at(name);
 }
 
 void StyleNonInheritedVariables::setRegisteredVariable(
     const AtomicString& name,
     const CSSValue* parsedValue) {
   m_registeredData.set(name, const_cast<CSSValue*>(parsedValue));
 }
 
 void StyleNonInheritedVariables::removeVariable(const AtomicString& name) {
   m_data.set(name, nullptr);
   m_registeredData.set(name, nullptr);
 }
 
 StyleNonInheritedVariables::StyleNonInheritedVariables(
     StyleNonInheritedVariables& other) {
   m_data = other.m_data;
   m_registeredData = other.m_registeredData;
 }
 
 }  // namespace blink