Add a couple of notifications related settings to app/extensions sync:

chrome/browser/extensions/extension_service.h

Index: chrome/browser/extensions/extension_service.h
===================================================================
--- chrome/browser/extensions/extension_service.h	(revision 107300)
+++ chrome/browser/extensions/extension_service.h	(working copy)
@@ -211,6 +211,15 @@
   virtual void SetIsIncognitoEnabled(const std::string& extension_id,
                                      bool enabled);
 
+  virtual bool IsNotificationsInitialSetupDone(

[asargent_no_longer_on_chrome, 2011/10/27 16:52:21]

Let's remove this IsNotificationsInitialSetupDone method in favor of just
calling through to the ExtensionPrefs method directly.

[Munjal (Google), 2011/10/27 18:35:05]

Done.
When I added this method, I thought it will be useful even though it is a single
line wrapper in case we need to mock it in testing (hence virtual). But turns
out testing was possible without that. So removed.

+      const std::string& extension_id) const;
+  virtual void SetNotificationsInitialSetupDone(const std::string& extension_id,

[asargent_no_longer_on_chrome, 2011/10/27 16:52:21]

Rename suggestion:

SetAppNotificationSetupDone

[Munjal (Google), 2011/10/27 18:35:05]

Done.

+      bool value);
+
+  virtual bool IsNotificationsDisabled(const std::string& extension_id) const;

[asargent_no_longer_on_chrome, 2011/10/27 16:52:21]

Let's remove this IsNotificationsDisabled method in favor of just calling
through to the ExtensionPrefs method directly.

[Munjal (Google), 2011/10/27 18:35:05]

Done.

+  virtual void SetNotificationsDisabled(const std::string& extension_id,

[asargent_no_longer_on_chrome, 2011/10/27 16:52:21]

Rename suggestion:

SetAppNotificationDisabled

[Munjal (Google), 2011/10/27 18:35:05]

Done.

+      bool value);
+
   // Returns true if the given extension can see events and data from another
   // sub-profile (incognito to original profile, or vice versa).
   bool CanCrossIncognito(const Extension* extension);