NotificationController handles an ownership of NotificaitonClient

Source/web/WebLocalFrameImpl.h

Index: Source/web/WebLocalFrameImpl.h
diff --git a/Source/web/WebLocalFrameImpl.h b/Source/web/WebLocalFrameImpl.h
index 911acd9773020f853419902ea54a04d8b2107f7d..3151fdeb07fd8c356e7619a8968fcce3f1d38f54 100644
--- a/Source/web/WebLocalFrameImpl.h
+++ b/Source/web/WebLocalFrameImpl.h
@@ -326,9 +326,6 @@ private:
 
     WebPlugin* focusedPluginIfInputMethodSupported();
 
-    // Returns the provider of desktop notifications.
-    NotificationPresenterImpl* notificationPresenterImpl();
-
     FrameLoaderClientImpl m_frameLoaderClientImpl;
 
     // The embedder retains a reference to the WebCore LocalFrame while it is active in the DOM. This
@@ -355,9 +352,6 @@ private:
     WebCore::IntSize m_inputEventsOffsetForEmulation;
     float m_inputEventsScaleFactorForEmulation;
 
-    // The provider of desktop notifications;
-    NotificationPresenterImpl m_notificationPresenter;
-
     UserMediaClientImpl m_userMediaClientImpl;
 };