Remove ContextLifecycleObserver from ActiveDOMCallback

third_party/WebKit/Source/bindings/core/v8/ActiveDOMCallback.h

Index: third_party/WebKit/Source/bindings/core/v8/ActiveDOMCallback.h
diff --git a/third_party/WebKit/Source/bindings/core/v8/ActiveDOMCallback.h b/third_party/WebKit/Source/bindings/core/v8/ActiveDOMCallback.h
index 63ed27f911660603d8d7d8bd8aef8536c031f411..b27429035349efca38c63b512f6992bb68202c14 100644
--- a/third_party/WebKit/Source/bindings/core/v8/ActiveDOMCallback.h
+++ b/third_party/WebKit/Source/bindings/core/v8/ActiveDOMCallback.h
@@ -32,7 +32,7 @@
 #define ActiveDOMCallback_h
 
 #include "core/CoreExport.h"
-#include "core/dom/ContextLifecycleObserver.h"
+#include "platform/heap/Handle.h"
 
 namespace blink {
 
@@ -45,12 +45,17 @@ class ExecutionContext;
 //
 // Should only be created, used, and destroyed on the script execution
 // context thread.
-class CORE_EXPORT ActiveDOMCallback : public ContextLifecycleObserver {
+class CORE_EXPORT ActiveDOMCallback : public GarbageCollectedMixin {
  public:
   explicit ActiveDOMCallback(ExecutionContext*);
   virtual ~ActiveDOMCallback();
 
   bool canInvokeCallback() const;
+
+  DECLARE_TRACE();
+
+ private:
+  Member<ExecutionContext> m_context;

[haraken, 2016/12/07 05:56:02]

Before this CL, it was WeakMember. However, I don't see any reason we want to
make it weak, so I changed it to Member.

 };
 
 }  // namespace blink