Merge two Notification constructors, increase priority of low-battery notification.

chrome/browser/notifications/notification.h

Index: chrome/browser/notifications/notification.h
diff --git a/chrome/browser/notifications/notification.h b/chrome/browser/notifications/notification.h
index 9e10d5311bf50ee2b00c7c1d5d66b823cee38b04..4c66aac5089474bb5b37a9c131f8eeb0b28de791 100644
--- a/chrome/browser/notifications/notification.h
+++ b/chrome/browser/notifications/notification.h
@@ -38,17 +38,6 @@ class Notification : public message_center::Notification {
                const base::string16& replace_id,
                NotificationDelegate* delegate);
 
-  // Initializes a notification with text content and an icon image. Currently
-  // only used on Ash. Does not generate content_url_.
-  Notification(const GURL& origin_url,
-               const gfx::Image& icon,
-               const base::string16& title,
-               const base::string16& body,
-               blink::WebTextDirection dir,
-               const base::string16& display_source,
-               const base::string16& replace_id,
-               NotificationDelegate* delegate);
-
   Notification(
       message_center::NotificationType type,
       const GURL& origin_url,