WTF/std normalization: replace WTF::Vector::first() with ::front()

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 223 matching lines @@
   if (editingState->isAborted())
     return;
 
   if (!ancestors.isEmpty()) {
     // Split the tree up the ancestor chain until the topBlockquote
     // Throughout this loop, clonedParent is the clone of ancestor's parent.
     // This is so we can clone ancestor's siblings and place the clones
     // into the clone corresponding to the ancestor's parent.
     Element* ancestor = nullptr;
     Element* clonedParent = nullptr;
-    for (ancestor = ancestors.first(),
+    for (ancestor = ancestors.front(),
         clonedParent = clonedAncestor->parentElement();
          ancestor && ancestor != topBlockquote;
          ancestor = ancestor->parentElement(),
         clonedParent = clonedParent->parentElement()) {
       moveRemainingSiblingsToNewParent(ancestor->nextSibling(), 0, clonedParent,
                                        editingState);
       if (editingState->isAborted())
         return;
     }
 
     // If the startNode's original parent is now empty, remove it
-    Element* originalParent = ancestors.first().get();
+    Element* originalParent = ancestors.front().get();
     if (!originalParent->hasChildren()) {
       removeNode(originalParent, editingState);
       if (editingState->isAborted())
         return;
     }
   }
 
   // Make sure the cloned block quote renders.
   addBlockPlaceholderIfNeeded(clonedBlockquote, editingState);
   if (editingState->isAborted())
     return;
 
   // Put the selection right before the break.
   setEndingSelection(SelectionInDOMTree::Builder()
                          .collapse(Position::beforeNode(breakElement))
                          .setIsDirectional(endingSelection().isDirectional())
                          .build());
   rebalanceWhitespace();
 }
 
 }  // namespace blink