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

third_party/WebKit/Source/core/timing/PerformanceUserTiming.cpp

Index: third_party/WebKit/Source/core/timing/PerformanceUserTiming.cpp
diff --git a/third_party/WebKit/Source/core/timing/PerformanceUserTiming.cpp b/third_party/WebKit/Source/core/timing/PerformanceUserTiming.cpp
index 7ef949d7af4a8d22b2053f78c40af3aef574dab0..fcf0013f3346d64afc591acb2bd352b11378e741 100644
--- a/third_party/WebKit/Source/core/timing/PerformanceUserTiming.cpp
+++ b/third_party/WebKit/Source/core/timing/PerformanceUserTiming.cpp
@@ -84,7 +84,7 @@ static void insertPerformanceEntry(PerformanceEntryMap& performanceEntryMap,
                                    PerformanceEntry& entry) {
   PerformanceEntryMap::iterator it = performanceEntryMap.find(entry.name());
   if (it != performanceEntryMap.end()) {
-    it->value.append(&entry);
+    it->value.push_back(&entry);
   } else {
     PerformanceEntryVector vector(1);
     vector[0] = Member<PerformanceEntry>(entry);