Migrate WTF::Vector::append() to ::push_back() [part 3 of N]

third_party/WebKit/Source/core/css/resolver/CSSVariableResolver.cpp

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/css/resolver/CSSVariableResolver.h"
 
 #include "core/CSSPropertyNames.h"
 #include "core/CSSValueKeywords.h"
 #include "core/StyleBuilderFunctions.h"
 #include "core/StylePropertyShorthand.h"
@@ skipping 167 matching lines @@
   while (!range.atEnd()) {
     if (range.peek().functionId() == CSSValueVar) {
       success &= resolveVariableReference(range.consumeBlock(),
                                           disallowAnimationTainted, result,
                                           resultIsAnimationTainted);
     } else if (range.peek().type() == AtKeywordToken &&
                equalIgnoringASCIICase(range.peek().value(), "apply") &&
                RuntimeEnabledFeatures::cssApplyAtRulesEnabled()) {
       resolveApplyAtRule(range, result);
     } else {
-      result.append(range.consume());
+      result.push_back(range.consume());
     }
   }
   return success;
 }
 
 const CSSValue* CSSVariableResolver::resolveVariableReferences(
     const StyleResolverState& state,
     CSSPropertyID id,
     const CSSValue& value,
     bool disallowAnimationTainted) {
@@ skipping 132 matching lines @@
 CSSVariableResolver::CSSVariableResolver(const StyleResolverState& state)
     : m_inheritedVariables(state.style()->inheritedVariables()),
       m_nonInheritedVariables(state.style()->nonInheritedVariables()),
       m_registry(state.document().propertyRegistry()) {}
 
 DEFINE_TRACE(CSSVariableResolver) {
   visitor->trace(m_registry);
 }
 
 }  // namespace blink