Remove ContextLifecycleObserver from ActiveDOMCallback

third_party/WebKit/Source/bindings/core/v8/V8IntersectionObserverCallback.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8IntersectionObserverCallback_h
 #define V8IntersectionObserverCallback_h
 
 #include "bindings/core/v8/ActiveDOMCallback.h"
 #include "bindings/core/v8/DOMWrapperWorld.h"
 #include "bindings/core/v8/ScopedPersistent.h"
@@ skipping 10 matching lines @@
  public:
   CORE_EXPORT V8IntersectionObserverCallback(v8::Local<v8::Function>,
                                              v8::Local<v8::Object>,
                                              ScriptState*);
   ~V8IntersectionObserverCallback() override;
 
   DECLARE_VIRTUAL_TRACE();
 
   void handleEvent(const HeapVector<Member<IntersectionObserverEntry>>&,
                    IntersectionObserver&) override;
+
   ExecutionContext* getExecutionContext() const override {
-    return ContextLifecycleObserver::getExecutionContext();
+    return m_scriptState->getExecutionContext();
   }
 
  private:
   ScopedPersistent<v8::Function> m_callback;
   RefPtr<ScriptState> m_scriptState;
 };
 
 }  // namespace blink
 #endif  // V8IntersectionObserverCallback_h