Introduce ExecutionContextClient

Source/core/workers/WorkerGlobalScope.cpp

Index: Source/core/workers/WorkerGlobalScope.cpp
diff --git a/Source/core/workers/WorkerGlobalScope.cpp b/Source/core/workers/WorkerGlobalScope.cpp
index 1214ce9bb551fc0c75550069faf015b85c9c1931..583c3801e492d56ee15e61eb28049563ea692ee9 100644
--- a/Source/core/workers/WorkerGlobalScope.cpp
+++ b/Source/core/workers/WorkerGlobalScope.cpp
@@ -89,6 +89,7 @@ WorkerGlobalScope::WorkerGlobalScope(const KURL& url, const String& userAgent, W
     , m_workerClients(workerClients)
 {
     ScriptWrappable::init(this);
+    setClient(this);
     setSecurityOrigin(SecurityOrigin::create(url));
     m_workerClients->reattachThread();
 }
@@ -102,6 +103,8 @@ WorkerGlobalScope::~WorkerGlobalScope()
 
     // Notify proxy that we are going away. This can free the WorkerThread object, so do not access it after this.
     thread()->workerReportingProxy().workerGlobalScopeDestroyed();
+
+    setClient(0);
 }
 
 void WorkerGlobalScope::applyContentSecurityPolicyFromString(const String& policy, ContentSecurityPolicy::HeaderType contentSecurityPolicyType)
@@ -145,6 +148,11 @@ void WorkerGlobalScope::disableEval(const String& errorMessage)
     m_script->disableEval(errorMessage);
 }
 
+double WorkerGlobalScope::timerAlignmentInterval() const
+{
+    return DOMTimer::visiblePageAlignmentInterval();
+}
+
 WorkerLocation* WorkerGlobalScope::location() const
 {
     if (!m_location)
@@ -321,4 +329,9 @@ WorkerEventQueue* WorkerGlobalScope::eventQueue() const
     return m_eventQueue.get();
 }
 
+PassOwnPtr<LifecycleNotifier> WorkerGlobalScope::createLifecycleNotifier()
+{
+    return ContextLifecycleNotifier::create(this);
+}
+
 } // namespace WebCore