Migrate WTF::Vector::append() to ::push_back() [part 5 of N]

third_party/WebKit/Source/core/editing/commands/BreakBlockquoteCommand.cpp

 /*
  * Copyright (C) 2005 Apple Computer, 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 177 matching lines @@
                            .setIsDirectional(endingSelection().isDirectional())
                            .build());
     return;
   }
 
   // Build up list of ancestors in between the start node and the top
   // blockquote.
   HeapVector<Member<Element>> ancestors;
   for (Element* node = startNode->parentElement();
        node && node != topBlockquote; node = node->parentElement())
-    ancestors.append(node);
+    ancestors.push_back(node);
 
   // Insert a clone of the top blockquote after the break.
   Element* clonedBlockquote = topBlockquote->cloneElementWithoutChildren();
   insertNodeAfter(clonedBlockquote, breakElement, editingState);
   if (editingState->isAborted())
     return;
 
   // Clone startNode's ancestors into the cloned blockquote.
   // On exiting this loop, clonedAncestor is the lowest ancestor
   // that was cloned (i.e. the clone of either ancestors.last()
@@ skipping 59 matching lines @@
 
   // Put the selection right before the break.
   setEndingSelection(SelectionInDOMTree::Builder()
                          .collapse(Position::beforeNode(breakElement))
                          .setIsDirectional(endingSelection().isDirectional())
                          .build());
   rebalanceWhitespace();
 }
 
 }  // namespace blink