WTF/std normalization: replace WTF::Vector::last with ::back

third_party/WebKit/Source/platform/graphics/paint/PaintController.cpp

 // Copyright 2014 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 "platform/graphics/paint/PaintController.h"
 
 #include "platform/graphics/GraphicsLayer.h"
 #include "platform/graphics/paint/DrawingDisplayItem.h"
 #include "platform/tracing/TraceEvent.h"
 #include "third_party/skia/include/core/SkPictureAnalyzer.h"
@@ skipping 126 matching lines @@
   if (m_newDisplayItemList.isEmpty())
     return;
 
 #if DCHECK_IS_ON()
   // Also remove the index pointing to the removed display item.
   IndicesByClientMap::iterator it = m_newDisplayItemIndicesByClient.find(
       &m_newDisplayItemList.last().client());
   if (it != m_newDisplayItemIndicesByClient.end()) {
     Vector<size_t>& indices = it->value;
     if (!indices.isEmpty() &&
-        indices.last() == (m_newDisplayItemList.size() - 1))
+        indices.back() == (m_newDisplayItemList.size() - 1))
       indices.pop_back();
   }
 #endif
 
   if (RuntimeEnabledFeatures::paintUnderInvalidationCheckingEnabled() &&
       isCheckingUnderInvalidation()) {
     if (m_skippedProbableUnderInvalidationCount) {
       --m_skippedProbableUnderInvalidationCount;
     } else {
       DCHECK(m_underInvalidationCheckingBegin);
@@ skipping 20 matching lines @@
     if (displayItem.isCacheable()) {
       // Mark the client shouldKeepAlive under this PaintController.
       // The status will end after the new display items are committed.
       displayItem.client().beginShouldKeepAlive(this);
 
       if (!m_currentSubsequenceClients.isEmpty()) {
         // Mark the client shouldKeepAlive under the current subsequence.
         // The status will end when the subsequence owner is invalidated or
         // deleted.
         displayItem.client().beginShouldKeepAlive(
-            m_currentSubsequenceClients.last());
+            m_currentSubsequenceClients.back());
       }
     }
 
     if (displayItem.getType() == DisplayItem::kSubsequence) {
       m_currentSubsequenceClients.append(&displayItem.client());
     } else if (displayItem.getType() == DisplayItem::kEndSubsequence) {
-      CHECK(m_currentSubsequenceClients.last() == &displayItem.client());
+      CHECK(m_currentSubsequenceClients.back() == &displayItem.client());
       m_currentSubsequenceClients.pop_back();
     }
   }
 #endif
 
   if (isSkippingCache())
     displayItem.setSkippedCache();
 
   if (RuntimeEnabledFeatures::slimmingPaintV2Enabled()) {
     size_t lastChunkIndex = m_newPaintChunks.lastChunkIndex();
@@ skipping 679 matching lines @@
                    m_currentPaintArtifact.getDisplayItemList(), showPictures)
                    .utf8()
                    .data());
   WTFLogAlways("new display item list: [%s]\n",
                displayItemListAsDebugString(m_newDisplayItemList, showPictures)
                    .utf8()
                    .data());
 }
 
 }  // namespace blink