Migrate WTF::Vector::append() to ::push_back() [part 2 of N]

third_party/WebKit/Source/core/animation/KeyframeEffectTest.cpp

Index: third_party/WebKit/Source/core/animation/KeyframeEffectTest.cpp
diff --git a/third_party/WebKit/Source/core/animation/KeyframeEffectTest.cpp b/third_party/WebKit/Source/core/animation/KeyframeEffectTest.cpp
index de6b4ca3e23cb58ab92197db541fb5e0ee07f0ee..ac694764cdfe073cb288827dd5751de4f0b30035 100644
--- a/third_party/WebKit/Source/core/animation/KeyframeEffectTest.cpp
+++ b/third_party/WebKit/Source/core/animation/KeyframeEffectTest.cpp
@@ -82,8 +82,8 @@ TEST_F(AnimationKeyframeEffectV8Test, CanCreateAnAnimation) {
   setV8ObjectPropertyAsString(scope.isolate(), keyframe2, "easing",
                               "cubic-bezier(1, 1, 0.3, 0.3)");
 
-  jsKeyframes.append(Dictionary(scope.isolate(), keyframe1, exceptionState));
-  jsKeyframes.append(Dictionary(scope.isolate(), keyframe2, exceptionState));
+  jsKeyframes.push_back(Dictionary(scope.isolate(), keyframe1, exceptionState));
+  jsKeyframes.push_back(Dictionary(scope.isolate(), keyframe2, exceptionState));
 
   String value1;
   ASSERT_TRUE(DictionaryHelper::get(jsKeyframes[0], "width", value1));