NotificationController handles an ownership of NotificaitonClient

Source/web/WebLocalFrameImpl.cpp

Index: Source/web/WebLocalFrameImpl.cpp
diff --git a/Source/web/WebLocalFrameImpl.cpp b/Source/web/WebLocalFrameImpl.cpp
index e9cd610cc75d86b134db6dc57df9d4b93e15d515..5bb13b1bfddcf440a7b58bbad656b1313707edce 100644
--- a/Source/web/WebLocalFrameImpl.cpp
+++ b/Source/web/WebLocalFrameImpl.cpp
@@ -1377,11 +1377,11 @@ WebPlugin* WebLocalFrameImpl::focusedPluginIfInputMethodSupported()
     return 0;
 }
 
-NotificationPresenterImpl* WebLocalFrameImpl::notificationPresenterImpl()
+PassOwnPtr<NotificationPresenterImpl> WebLocalFrameImpl::notificationPresenterImpl()
 {
-    if (!m_notificationPresenter.isInitialized() && m_client)
-        m_notificationPresenter.initialize(m_client->notificationPresenter());
-    return &m_notificationPresenter;
+    if (!m_notificationPresenter->isInitialized() && m_client)
+        m_notificationPresenter->initialize(m_client->notificationPresenter());
+    return m_notificationPresenter.release();
 }
 
 int WebLocalFrameImpl::printBegin(const WebPrintParams& printParams, const WebNode& constrainToNode)