Migrate WTF::Vector::append() to ::push_back() in XPathGrammar

third_party/WebKit/Source/core/xml/XPathGrammar.y

 /*
  * Copyright 2005 Frerich Raabe <raabe@kde.org>
  * Copyright (C) 2006 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  *
  * 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
@@ skipping 257 matching lines @@
         $$ = 0;
     }
     |
     PredicateList
     ;
 
 PredicateList:
     Predicate
     {
         $$ = new blink::HeapVector<blink::Member<Predicate>>;
-        $$->append(new Predicate($1));
+        $$->push_back(new Predicate($1));
     }
     |
     PredicateList Predicate
     {
-        $$->append(new Predicate($2));
+        $$->push_back(new Predicate($2));
     }
     ;
 
 Predicate:
     '[' Expr ']'
     {
         $$ = $2;
     }
     ;
 
@@ skipping 58 matching lines @@
         if (!$$)
             YYABORT;
         parser->deleteString($1);
     }
     ;
 
 ArgumentList:
     Argument
     {
         $$ = new blink::HeapVector<blink::Member<Expression>>;
-        $$->append($1);
+        $$->push_back($1);
     }
     |
     ArgumentList ',' Argument
     {
-        $$->append($3);
+        $$->push_back($3);
     }
     ;
 
 Argument:
     Expr
     ;
 
 UnionExpr:
     PathExpr
     |
@@ skipping 99 matching lines @@
     UnionExpr
     |
     MINUS UnaryExpr
     {
         $$ = new Negative;
         $$->addSubExpression($2);
     }
     ;
 
 %%