Signal no pending activity in destructed contexts.

third_party/WebKit/Source/modules/presentation/PresentationRequest.cpp

 // Copyright 2015 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.
 
 #include "modules/presentation/PresentationRequest.h"
 
 #include "bindings/core/v8/CallbackPromiseAdapter.h"
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/ScriptPromise.h"
 #include "bindings/core/v8/ScriptPromiseResolver.h"
@@ skipping 83 matching lines @@
     const AtomicString& eventType,
     RegisteredEventListener& registeredListener) {
   EventTargetWithInlineData::addedEventListener(eventType, registeredListener);
   if (eventType == EventTypeNames::connectionavailable)
     UseCounter::count(
         getExecutionContext(),
         UseCounter::PresentationRequestConnectionAvailableEventListener);
 }
 
 bool PresentationRequest::hasPendingActivity() const {
-  if (!getExecutionContext() || getExecutionContext()->isContextDestroyed())
-    return false;
-
   // Prevents garbage collecting of this object when not hold by another
   // object but still has listeners registered.
-  return hasEventListeners();
+  return getExecutionContext() && hasEventListeners();
 }
 
 ScriptPromise PresentationRequest::start(ScriptState* scriptState) {
   Settings* contextSettings = settings(getExecutionContext());
   bool isUserGestureRequired =
       !contextSettings || contextSettings->presentationRequiresUserGesture();
 
   if (isUserGestureRequired && !UserGestureIndicator::utilizeUserGesture())
     return ScriptPromise::rejectWithDOMException(
         scriptState,
@@ skipping 88 matching lines @@
   SuspendableObject::trace(visitor);
 }
 
 PresentationRequest::PresentationRequest(ExecutionContext* executionContext,
                                          const KURL& url)
     : ActiveScriptWrappable(this),
       SuspendableObject(executionContext),
       m_url(url) {}
 
 }  // namespace blink