Move the logic for creating data: URLs out of DesktopNotificationService.

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 d2a9d4aef8e87316a2a2fc024375e650899c5864..9390ca2fff136ead8346201b4b10f2387367b1fd 100644
--- a/chrome/browser/notifications/notification.h
+++ b/chrome/browser/notifications/notification.h
@@ -13,11 +13,14 @@
 #include "base/values.h"
 #include "chrome/browser/notifications/notification_delegate.h"
 #include "third_party/WebKit/public/web/WebTextDirection.h"
-#include "ui/gfx/image/image.h"
 #include "ui/message_center/notification.h"
 #include "ui/message_center/notification_types.h"
 #include "url/gurl.h"
 
+namespace gfx {
+class Image;
+}
+
 // Representation of a notification to be shown to the user.
 // On non-Ash platforms these are rendered as HTML, sometimes described by a
 // data url converted from text + icon data. On Ash they are rendered as
@@ -63,9 +66,6 @@ class Notification : public message_center::Notification {
   virtual ~Notification();
   Notification& operator=(const Notification& notification);
 
-  // The URL (may be data:) containing the contents for the notification.
-  const GURL& content_url() const { return content_url_; }
-
   // The origin URL of the script which requested the notification.
   const GURL& origin_url() const { return origin_url_; }
 
@@ -101,10 +101,6 @@ class Notification : public message_center::Notification {
   // to have a non NULL RenderViewHost.
   GURL icon_url_;
 
-  // The URL of the HTML content of the toast (may be a data: URL for simple
-  // string-based notifications).
-  GURL content_url_;
-
   // The URLs of the button images for a rich notification.
   GURL button_one_icon_url_;
   GURL button_two_icon_url_;