Expose performance.memory in workers

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 e7e302d8187271df8ca5752750af342b6bd42587..d6090c5cf690ed3e89259eecdf46377c6e07bd47 100644
--- a/Source/core/workers/WorkerGlobalScope.cpp
+++ b/Source/core/workers/WorkerGlobalScope.cpp
@@ -73,7 +73,7 @@ public:
     virtual bool isCleanupTask() const { return true; }
 };
 
-WorkerGlobalScope::WorkerGlobalScope(const KURL& url, const String& userAgent, WorkerThread* thread, double timeOrigin, PassOwnPtr<WorkerClients> workerClients)
+WorkerGlobalScope::WorkerGlobalScope(const KURL& url, const String& userAgent, WorkerThread* thread, double timeOrigin, const WorkerSettings& settings, PassOwnPtr<WorkerClients> workerClients)
     : m_url(url)
     , m_userAgent(userAgent)
     , m_script(adoptPtr(new WorkerScriptController(*this)))
@@ -83,10 +83,12 @@ WorkerGlobalScope::WorkerGlobalScope(const KURL& url, const String& userAgent, W
     , m_eventQueue(WorkerEventQueue::create(this))
     , m_workerClients(workerClients)
     , m_timeOrigin(timeOrigin)
+    , m_workerSettings(WorkerSettings::create())
 {
     ScriptWrappable::init(this);
     setClient(this);
     setSecurityOrigin(SecurityOrigin::create(url));
+    m_workerSettings->setMemoryInfoEnabled(settings.memoryInfoEnabled());
     m_workerClients->reattachThread();
 }