[WIP] Migrate hasPendingActivity from ActiveDOMObject to ScriptWrappable.

third_party/WebKit/Source/core/dom/ActiveDOMObject.h

Index: third_party/WebKit/Source/core/dom/ActiveDOMObject.h
diff --git a/third_party/WebKit/Source/core/dom/ActiveDOMObject.h b/third_party/WebKit/Source/core/dom/ActiveDOMObject.h
index fb415d7d75fff359f8fdaa5457e437b2fb374f02..d916f25b303888012dd00fd32e51d7b6221b575c 100644
--- a/third_party/WebKit/Source/core/dom/ActiveDOMObject.h
+++ b/third_party/WebKit/Source/core/dom/ActiveDOMObject.h
@@ -44,10 +44,6 @@ public:
     bool suspendIfNeededCalled() const { return m_suspendIfNeededCalled; }
 #endif
 
-    // Should return true if there's any pending asynchronous activity, and so
-    // this object must not be garbage collected.
-    virtual bool hasPendingActivity() const;
-
     // These methods have an empty default implementation so that subclasses
     // which don't need special treatment can skip implementation.
     virtual void suspend();