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

third_party/WebKit/Source/core/dom/custom/CustomElementReactionStack.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/dom/custom/CustomElementReactionStack.h"
 
 #include "bindings/core/v8/Microtask.h"
 #include "core/dom/Element.h"
 #include "core/dom/custom/CEReactionsScope.h"
 #include "core/dom/custom/CustomElementReactionQueue.h"
@@ skipping 36 matching lines @@
 void CustomElementReactionStack::popInvokingReactions() {
   ElementQueue* queue = m_stack.back();
   if (queue)
     invokeReactions(*queue);
   m_stack.pop_back();
 }
 
 void CustomElementReactionStack::invokeReactions(ElementQueue& queue) {
   for (size_t i = 0; i < queue.size(); ++i) {
     Element* element = queue[i];
-    if (CustomElementReactionQueue* reactions = m_map.get(element)) {
+    if (CustomElementReactionQueue* reactions = m_map.at(element)) {
       reactions->invokeReactions(element);
       CHECK(reactions->isEmpty());
       m_map.erase(element);
     }
   }
 }
 
 void CustomElementReactionStack::enqueueToCurrentQueue(
     Element* element,
     CustomElementReaction* reaction) {
   enqueue(m_stack.back(), element, reaction);
 }
 
 void CustomElementReactionStack::enqueue(Member<ElementQueue>& queue,
                                          Element* element,
                                          CustomElementReaction* reaction) {
   if (!queue)
     queue = new ElementQueue();
   queue->push_back(element);
 
-  CustomElementReactionQueue* reactions = m_map.get(element);
+  CustomElementReactionQueue* reactions = m_map.at(element);
   if (!reactions) {
     reactions = new CustomElementReactionQueue();
     m_map.insert(TraceWrapperMember<Element>(this, element), reactions);
   }
 
   reactions->add(reaction);
 }
 
 void CustomElementReactionStack::enqueueToBackupQueue(
     Element* element,
     CustomElementReaction* reaction) {
   // https://html.spec.whatwg.org/multipage/scripting.html#backup-element-queue
 
   DCHECK(!CEReactionsScope::current());
   DCHECK(m_stack.isEmpty());
   DCHECK(isMainThread());
 
   // If the processing the backup element queue is not set:
   if (!m_backupQueue || m_backupQueue->isEmpty()) {
     Microtask::enqueueMicrotask(
         WTF::bind(&CustomElementReactionStack::invokeBackupQueue,
                   Persistent<CustomElementReactionStack>(this)));
   }
 
   enqueue(m_backupQueue, element, reaction);
 }
 
 void CustomElementReactionStack::clearQueue(Element* element) {
-  if (CustomElementReactionQueue* reactions = m_map.get(element))
+  if (CustomElementReactionQueue* reactions = m_map.at(element))
     reactions->clear();
 }
 
 void CustomElementReactionStack::invokeBackupQueue() {
   DCHECK(isMainThread());
   invokeReactions(*m_backupQueue);
   m_backupQueue->clear();
 }
 
 CustomElementReactionStack& CustomElementReactionStack::current() {
   return *customElementReactionStack();
 }
 
 CustomElementReactionStack*
 CustomElementReactionStackTestSupport::setCurrentForTest(
     CustomElementReactionStack* newStack) {
   Persistent<CustomElementReactionStack>& stack = customElementReactionStack();
   CustomElementReactionStack* oldStack = stack.get();
   stack = newStack;
   return oldStack;
 }
 
 }  // namespace blink