Migrate WTF::Vector::append() to ::push_back() [part 12 of N]

third_party/WebKit/Source/core/timing/PerformanceObserverTest.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/timing/PerformanceObserver.h"
 
 #include "bindings/core/v8/PerformanceObserverCallback.h"
 #include "bindings/core/v8/V8BindingForTesting.h"
 #include "core/timing/Performance.h"
 #include "core/timing/PerformanceBase.h"
@@ skipping 33 matching lines @@
   Persistent<PerformanceObserver> m_observer;
 };
 
 TEST_F(PerformanceObserverTest, Observe) {
   V8TestingScope scope;
   initialize(scope.getScriptState());
 
   NonThrowableExceptionState exceptionState;
   PerformanceObserverInit options;
   Vector<String> entryTypeVec;
-  entryTypeVec.append("mark");
+  entryTypeVec.push_back("mark");
   options.setEntryTypes(entryTypeVec);
 
   m_observer->observe(options, exceptionState);
   EXPECT_TRUE(isRegistered());
 }
 
 TEST_F(PerformanceObserverTest, Enqueue) {
   V8TestingScope scope;
   initialize(scope.getScriptState());
 
@@ skipping 26 matching lines @@
   EXPECT_EQ(0, numPerformanceEntries());
 
   m_observer->enqueuePerformanceEntry(*entry);
   EXPECT_EQ(1, numPerformanceEntries());
 
   m_observer->disconnect();
   EXPECT_FALSE(isRegistered());
   EXPECT_EQ(0, numPerformanceEntries());
 }
 }