Enable ServerTiming support

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

Index: third_party/WebKit/Source/core/timing/PerformanceObserver.cpp
diff --git a/third_party/WebKit/Source/core/timing/PerformanceObserver.cpp b/third_party/WebKit/Source/core/timing/PerformanceObserver.cpp
index ac49c2c2083853925e8c0abe089140044c32265d..d5885e324e2b066143b4310126d04c29c2505e5b 100644
--- a/third_party/WebKit/Source/core/timing/PerformanceObserver.cpp
+++ b/third_party/WebKit/Source/core/timing/PerformanceObserver.cpp
@@ -69,6 +69,13 @@ void PerformanceObserver::disconnect() {
   is_registered_ = false;
 }
 
+void PerformanceObserver::MaybeEnqueuePerformanceEntry(
+    PerformanceEntry& entry) {
+  if (FilterOptions() & entry.EntryTypeEnum()) {
+    EnqueuePerformanceEntry(entry);
+  }
+}
+
 void PerformanceObserver::EnqueuePerformanceEntry(PerformanceEntry& entry) {
   ASSERT(IsMainThread());
   performance_entries_.push_back(&entry);