Signal no pending activity in destructed contexts.

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

Index: third_party/WebKit/Source/modules/presentation/PresentationRequest.cpp
diff --git a/third_party/WebKit/Source/modules/presentation/PresentationRequest.cpp b/third_party/WebKit/Source/modules/presentation/PresentationRequest.cpp
index a378729c3c5f8cf76fe4928b0a89b293dda3fe2f..f2e47a5420b247e0128abd44fb2185d98722f57d 100644
--- a/third_party/WebKit/Source/modules/presentation/PresentationRequest.cpp
+++ b/third_party/WebKit/Source/modules/presentation/PresentationRequest.cpp
@@ -101,12 +101,9 @@ void PresentationRequest::addedEventListener(
 }
 
 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) {