Make ServiceWorker an ActiveDOMObject

Source/modules/serviceworkers/ServiceWorker.cpp

Index: Source/modules/serviceworkers/ServiceWorker.cpp
diff --git a/Source/modules/serviceworkers/ServiceWorker.cpp b/Source/modules/serviceworkers/ServiceWorker.cpp
index b1de87b41bdaa829ed13beb2cea9383ad9f28c18..7abb5227cd8ec30df2a3bb8ee6b662f74891d17c 100644
--- a/Source/modules/serviceworkers/ServiceWorker.cpp
+++ b/Source/modules/serviceworkers/ServiceWorker.cpp
@@ -67,6 +67,18 @@ private:
     RefPtr<ServiceWorker> m_observer;
 };
 
+bool ServiceWorker::hasPendingActivity() const
+{
+    if (m_contextStopped)
+        return false;
+    return m_outerWorker->state() != blink::WebServiceWorkerStateDeactivated;
+}
+
+void ServiceWorker::stop()
+{
+    m_contextStopped = true;

[dominicc (has gone to gerrit), 2014/06/12 22:23:38]

Would it make sense to tie m_contextStopped and m_isPromisePending into one
"state"? WDYT?

[falken, 2014/06/13 19:22:59]

Hmm, right it would be good to make the possible combinations of the states
explicit, or disallow combinations. I've made an m_proxyState.

+}
+
 const AtomicString& ServiceWorker::interfaceName() const
 {
     return EventTargetNames::ServiceWorker;
@@ -188,6 +200,7 @@ ServiceWorker::ServiceWorker(ExecutionContext* executionContext, PassOwnPtr<blin
     , WebServiceWorkerProxy(this)
     , m_outerWorker(worker)
     , m_isPromisePending(false)
+    , m_contextStopped(false)
 {
     ScriptWrappable::init(this);
     ASSERT(m_outerWorker);