Migrate WTF::Vector::append() to ::push_back() [part 6 of N]

third_party/WebKit/Source/core/frame/Frame.cpp

 /*
  * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
  *                     1999 Lars Knoll <knoll@kde.org>
  *                     1999 Antti Koivisto <koivisto@kde.org>
  *                     2000 Simon Hausmann <hausmann@kde.org>
  *                     2000 Stefan Schimanski <1Stein@gmx.de>
  *                     2001 George Staikos <staikos@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All
  * rights reserved.
  * Copyright (C) 2005 Alexey Proskuryakov <ap@nypop.com>
@@ skipping 312 matching lines @@
 Settings* Frame::settings() const {
   if (m_host)
     return &m_host->settings();
   return nullptr;
 }
 
 void Frame::didChangeVisibilityState() {
   HeapVector<Member<Frame>> childFrames;
   for (Frame* child = tree().firstChild(); child;
        child = child->tree().nextSibling())
-    childFrames.append(child);
+    childFrames.push_back(child);
   for (size_t i = 0; i < childFrames.size(); ++i)
     childFrames[i]->didChangeVisibilityState();
 }
 
 Frame::Frame(FrameClient* client, FrameHost* host, FrameOwner* owner)
     : m_treeNode(this),
       m_host(host),
       m_owner(owner),
       m_client(client),
       m_isLoading(false) {
   InstanceCounters::incrementCounter(InstanceCounters::FrameCounter);
 
   ASSERT(page());
 
   if (m_owner)
     m_owner->setContentFrame(*this);
   else
     page()->setMainFrame(this);
 }
 
 }  // namespace blink