Migrate WTF::Vector::append() to ::push_back() [part 4 of N]

third_party/WebKit/Source/core/dom/custom/V0CustomElementProcessingStack.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 59 matching lines @@
 
  private:
   V0CustomElementProcessingStack() {
     // Add a null element as a sentinel. This makes it possible to
     // identify elements queued when there is no
     // CallbackDeliveryScope active. Also, if the processing stack
     // is popped when empty, this sentinel will cause a null deref
     // crash.
     V0CustomElementCallbackQueue* sentinel = 0;
     for (size_t i = 0; i < kNumSentinels; i++)
-      m_flattenedProcessingStack.append(sentinel);
+      m_flattenedProcessingStack.push_back(sentinel);
     DCHECK_EQ(s_elementQueueEnd, m_flattenedProcessingStack.size());
   }
 
   // The start of the element queue on the top of the processing
   // stack. An offset into instance().m_flattenedProcessingStack.
   static size_t s_elementQueueStart;
 
   // The end of the element queue on the top of the processing
   // stack. A cache of instance().m_flattenedProcessingStack.size().
   static size_t s_elementQueueEnd;
 
   static V0CustomElementCallbackQueue::ElementQueueId currentElementQueue() {
     return V0CustomElementCallbackQueue::ElementQueueId(s_elementQueueStart);
   }
 
   static void processElementQueueAndPop();
   void processElementQueueAndPop(size_t start, size_t end);
 
   // The processing stack, flattened. Element queues lower in the
   // stack appear toward the head of the vector. The first element
   // is a null sentinel value.
   static const size_t kNumSentinels = 1;
   HeapVector<Member<V0CustomElementCallbackQueue>> m_flattenedProcessingStack;
 };
 
 }  // namespace blink
 
 #endif  // V0CustomElementProcessingStack_h