Migrate WTF::Deque::first() to ::front()

third_party/WebKit/Source/core/input/PointerEventManager.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/input/PointerEventManager.h"
 
 #include "core/dom/DocumentUserGestureToken.h"
 #include "core/dom/ElementTraversal.h"
 #include "core/dom/shadow/FlatTreeTraversal.h"
 #include "core/events/MouseEvent.h"
@@ skipping 694 matching lines @@
 bool PointerEventManager::isAnyTouchActive() const {
   return m_touchEventManager->isAnyTouchActive();
 }
 
 bool PointerEventManager::primaryPointerdownCanceled(
     uint32_t uniqueTouchEventId) {
   // It's safe to assume that uniqueTouchEventIds won't wrap back to 0 from
   // 2^32-1 (>4.2 billion): even with a generous 100 unique ids per touch
   // sequence & one sequence per 10 second, it takes 13+ years to wrap back.
   while (!m_touchIdsForCanceledPointerdowns.isEmpty()) {
-    uint32_t firstId = m_touchIdsForCanceledPointerdowns.first();
+    uint32_t firstId = m_touchIdsForCanceledPointerdowns.front();
     if (firstId > uniqueTouchEventId)
       return false;
     m_touchIdsForCanceledPointerdowns.takeFirst();
     if (firstId == uniqueTouchEventId)
       return true;
   }
   return false;
 }
 
 }  // namespace blink