Oilpan: Fix weak processing for IntersectionObserver::m_root

third_party/WebKit/Source/platform/heap/Heap.h

Index: third_party/WebKit/Source/platform/heap/Heap.h
diff --git a/third_party/WebKit/Source/platform/heap/Heap.h b/third_party/WebKit/Source/platform/heap/Heap.h
index 84753b2b9c76aff95e132ba5fdeac79979319f7d..e05747f09eb7185723691cbd68ef6c03aa317ef8 100644
--- a/third_party/WebKit/Source/platform/heap/Heap.h
+++ b/third_party/WebKit/Source/platform/heap/Heap.h
@@ -117,6 +117,11 @@ public:
     {
         return isHeapObjectAlive(ptr.get());
     }
+    template<typename T>
+    static inline bool isHeapObjectAlive(const WeakPtr<T>& ptr)

[sof, 2016/01/16 14:26:12]

Do we really want this?

+    {
+        return isHeapObjectAlive(ptr.get());
+    }
 
     // Is the finalizable GC object still alive, but slated for lazy sweeping?
     // If a lazy sweep is in progress, returns true if the object was found