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

third_party/WebKit/Source/core/css/cssom/CSSUnparsedValueTest.cpp

 // Copyright 2016 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/cssom/CSSUnparsedValue.h"
 
 #include "core/css/cssom/CSSStyleVariableReferenceValue.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace blink {
 
 namespace {
 
 CSSUnparsedValue* unparsedValueFromCSSVariableReferenceValue(
     CSSStyleVariableReferenceValue* variableReferenceValue) {
   HeapVector<StringOrCSSVariableReferenceValue> fragments;
-  fragments.append(
+  fragments.push_back(
       StringOrCSSVariableReferenceValue::fromCSSVariableReferenceValue(
           variableReferenceValue));
   return CSSUnparsedValue::create(fragments);
 }
 
 }  // namespace
 
 TEST(CSSUnparsedValueTest, EmptyList) {
   HeapVector<StringOrCSSVariableReferenceValue> fragments;
   CSSUnparsedValue* unparsedValue = CSSUnparsedValue::create(fragments);
@@ skipping 30 matching lines @@
   EXPECT_EQ(unparsedValue->fragmentAtIndex(0).getAsCSSVariableReferenceValue(),
             variableReferenceValue);
 }
 
 TEST(CSSUnparsedValueTest, MixedList) {
   CSSStyleVariableReferenceValue* variableReferenceValue =
       CSSStyleVariableReferenceValue::create(
           "Ref", CSSUnparsedValue::fromString("string"));
 
   HeapVector<StringOrCSSVariableReferenceValue> fragments;
-  fragments.append(StringOrCSSVariableReferenceValue::fromString("string"));
-  fragments.append(
+  fragments.push_back(StringOrCSSVariableReferenceValue::fromString("string"));
+  fragments.push_back(
       StringOrCSSVariableReferenceValue::fromCSSVariableReferenceValue(
           variableReferenceValue));
-  fragments.append(StringOrCSSVariableReferenceValue());
+  fragments.push_back(StringOrCSSVariableReferenceValue());
 
   CSSUnparsedValue* unparsedValue = CSSUnparsedValue::create(fragments);
 
   EXPECT_EQ(unparsedValue->size(), fragments.size());
 
   EXPECT_TRUE(unparsedValue->fragmentAtIndex(0).isString());
   EXPECT_FALSE(unparsedValue->fragmentAtIndex(0).isCSSVariableReferenceValue());
   EXPECT_EQ(unparsedValue->fragmentAtIndex(0).getAsString(), "string");
 
   EXPECT_TRUE(unparsedValue->fragmentAtIndex(1).isCSSVariableReferenceValue());
   EXPECT_FALSE(unparsedValue->fragmentAtIndex(1).isString());
   EXPECT_EQ(unparsedValue->fragmentAtIndex(1).getAsCSSVariableReferenceValue(),
             variableReferenceValue);
 
   EXPECT_TRUE(unparsedValue->fragmentAtIndex(2).isNull());
 }
 
 }  // namespace blink