Re-implement the screensaver to use WebView instead of ExtensionDialogHost.

chrome/browser/chromeos/kiosk_mode/kiosk_mode_screensaver.h

Index: chrome/browser/chromeos/kiosk_mode/kiosk_mode_screensaver.h
diff --git a/chrome/browser/chromeos/kiosk_mode/kiosk_mode_screensaver.h b/chrome/browser/chromeos/kiosk_mode/kiosk_mode_screensaver.h
index db72f458f91d383c8fc185eab5b0a3faa03e06d2..449539f5bef8f93099d041ce44fc90e9e5b3ec81 100644
--- a/chrome/browser/chromeos/kiosk_mode/kiosk_mode_screensaver.h
+++ b/chrome/browser/chromeos/kiosk_mode/kiosk_mode_screensaver.h
@@ -14,6 +14,7 @@
 #include "content/public/browser/notification_registrar.h"
 
 class Extension;
+class Profile;
 
 namespace chromeos {
 
@@ -45,6 +46,7 @@ class KioskModeScreensaver : public PowerManagerClient::Observer,
   // Called back on the UI thread to Setup the screensaver with the now unpacked
   // and loaded extension.
   void SetupScreensaver(scoped_refptr<Extension> extension,
+                        Profile* default_profile,
                         const FilePath& extension_base_path);
 
   content::NotificationRegistrar registrar_;