Migrate WTF::Vector::append() to ::push_back() [part 10 of N]

third_party/WebKit/Source/core/loader/resource/MultipartImageResourceParserTest.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/loader/resource/MultipartImageResourceParser.h"
 
 #include "platform/network/ResourceResponse.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 #include <stddef.h>
 #include <stdint.h>
 #include <string.h>
 
 namespace blink {
 
 namespace {
 
 String toString(const Vector<char>& data) {
   if (data.isEmpty())
     return String("");
   return String(data.data(), data.size());
 }
 
 class MockClient final : public GarbageCollectedFinalized<MockClient>,
                          public MultipartImageResourceParser::Client {
   USING_GARBAGE_COLLECTED_MIXIN(MockClient);
 
  public:
   void onePartInMultipartReceived(const ResourceResponse& response) override {
-    m_responses.append(response);
-    m_data.append(Vector<char>());
+    m_responses.push_back(response);
+    m_data.push_back(Vector<char>());
   }
   void multipartDataReceived(const char* bytes, size_t size) override {
     m_data.back().append(bytes, size);
   }
 
   Vector<ResourceResponse> m_responses;
   Vector<Vector<char>> m_data;
 };
 
 TEST(MultipartResponseTest, SkippableLength) {
@@ skipping 378 matching lines @@
   EXPECT_EQ("\r\ncontent-type: 1\r\n\r\n\r\n\r\n", toString(client->m_data[1]));
   EXPECT_EQ(String(), client->m_responses[2].httpHeaderField("content-type"));
   EXPECT_EQ("content-type: 2\r\n\r\n\r\n\r\n", toString(client->m_data[2]));
   EXPECT_EQ("3", client->m_responses[3].httpHeaderField("content-type"));
   EXPECT_EQ("", toString(client->m_data[3]));
 }
 
 }  // namespace
 
 }  // namespace blink