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third_party/WebKit/Source/core/frame/LocalDOMWindow.cpp

Index: third_party/WebKit/Source/core/frame/LocalDOMWindow.cpp
diff --git a/third_party/WebKit/Source/core/frame/LocalDOMWindow.cpp b/third_party/WebKit/Source/core/frame/LocalDOMWindow.cpp
index 5ba9b469a15c86c1539ea5390ec2abd981c4a013..57fc4921e1689af6d1d900b1ec57ac7aa8ab9e02 100644
--- a/third_party/WebKit/Source/core/frame/LocalDOMWindow.cpp
+++ b/third_party/WebKit/Source/core/frame/LocalDOMWindow.cpp
@@ -74,6 +74,8 @@
 #include "core/page/Page.h"
 #include "core/page/WindowFeatures.h"
 #include "core/page/scrolling/ScrollingCoordinator.h"
+#include "core/timing/DOMWindowPerformance.h"
+#include "core/timing/PerformanceBase.h"
 #include "platform/EventDispatchForbiddenScope.h"
 #include "platform/weborigin/SecurityOrigin.h"
 #include "platform/weborigin/Suborigin.h"
@@ -1398,6 +1400,11 @@ void LocalDOMWindow::dispatchLoadEvent() {
   } else {
     dispatchEvent(loadEvent, document());
   }
+  // This is unfortunately that we have to cast in here

[panicker, 2016/11/02 20:12:37]

You shouldn't need a cast here.

[sunjian, 2016/11/04 01:12:38]

Done.

+  // (TODO:sunjian) Find a better way of doing it
+  // Also check nullptr

[panicker, 2016/11/02 20:12:37]

Add DCHECK here:
Performance* performance = DOMWindowPerformance::performance(..);
DCHECK(performance);
performance->addNavigationTiming(..);

[sunjian, 2016/11/04 01:12:38]

Done.

+  ((PerformanceBase*)(DOMWindowPerformance::performance(*this)))
+      ->addNavigationTiming(frame());
 
   // For load events, send a separate load event to the enclosing frame only.
   // This is a DOM extension and is independent of bubbling/capturing rules of