Remove WaitUntilObserver::decrementPendingActivity() from RespondWithObserver::contextDestroyed()

third_party/WebKit/Source/modules/serviceworkers/RespondWithObserver.cpp

 // Copyright 2014 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/serviceworkers/RespondWithObserver.h"
 
 #include "bindings/core/v8/ScriptFunction.h"
 #include "bindings/core/v8/ScriptPromise.h"
 #include "bindings/core/v8/ScriptValue.h"
 #include "bindings/core/v8/V8Binding.h"
@@ skipping 170 matching lines @@
     WebURLRequest::RequestContext requestContext,
     WaitUntilObserver* observer) {
   return new RespondWithObserver(context, eventID, requestURL, requestMode,
                                  frameType, requestContext, observer);
 }
 
 void RespondWithObserver::contextDestroyed() {
   ContextLifecycleObserver::contextDestroyed();
   if (m_observer) {
     DCHECK_EQ(Pending, m_state);
-    m_observer->decrementPendingActivity();
     m_observer.clear();
   }
   m_state = Done;
 }
 
 void RespondWithObserver::willDispatchEvent() {
   m_eventDispatchTime = WTF::currentTime();
 }
 
 void RespondWithObserver::didDispatchEvent(DispatchEventResult dispatchResult) {
@@ skipping 136 matching lines @@
       m_requestContext(requestContext),
       m_state(Initial),
       m_observer(observer) {}
 
 DEFINE_TRACE(RespondWithObserver) {
   visitor->trace(m_observer);
   ContextLifecycleObserver::trace(visitor);
 }
 
 }  // namespace blink