[ServiceWorker] Allow waitUntil to be called multiple times asynchronously

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

Index: third_party/WebKit/Source/modules/serviceworkers/RespondWithObserver.cpp
diff --git a/third_party/WebKit/Source/modules/serviceworkers/RespondWithObserver.cpp b/third_party/WebKit/Source/modules/serviceworkers/RespondWithObserver.cpp
index 4d347a7f9e40dde6a1f9786c12944a801fe689f1..13ed0e8d161896bc4d35768800120cab87942458 100644
--- a/third_party/WebKit/Source/modules/serviceworkers/RespondWithObserver.cpp
+++ b/third_party/WebKit/Source/modules/serviceworkers/RespondWithObserver.cpp
@@ -81,7 +81,7 @@ void RespondWithObserver::DidDispatchEvent(
     return;
 
   if (dispatch_result != DispatchEventResult::kNotCanceled) {
-    observer_->IncrementPendingActivity();
+    observer_->IncrementPendingPromise();
     ResponseWasRejected(kWebServiceWorkerResponseErrorDefaultPrevented);
     return;
   }
@@ -101,7 +101,7 @@ void RespondWithObserver::RespondWith(ScriptState* script_state,
   }
 
   state_ = kPending;
-  observer_->IncrementPendingActivity();
+  observer_->IncrementPendingPromise();
   script_promise.Then(ThenFunction::CreateFunction(script_state, this,
                                                    ThenFunction::kFulfilled),
                       ThenFunction::CreateFunction(script_state, this,
@@ -112,14 +112,14 @@ void RespondWithObserver::ResponseWasRejected(
     WebServiceWorkerResponseError error) {
   OnResponseRejected(error);
   state_ = kDone;
-  observer_->DecrementPendingActivity();
+  observer_->DecrementPendingPromise();
   observer_.Clear();
 }
 
 void RespondWithObserver::ResponseWasFulfilled(const ScriptValue& value) {
   OnResponseFulfilled(value);
   state_ = kDone;
-  observer_->DecrementPendingActivity();
+  observer_->DecrementPendingPromise();
   observer_.Clear();
 }