Adding notifications for new sync types.

chrome/browser/sync/profile_sync_service.h

Index: chrome/browser/sync/profile_sync_service.h
diff --git a/chrome/browser/sync/profile_sync_service.h b/chrome/browser/sync/profile_sync_service.h
index cef7d6185025d8c6c84b7868bacfea5f25ec6cad..f459541f597a9c1ee48dc81066e79bff3ddfc056 100644
--- a/chrome/browser/sync/profile_sync_service.h
+++ b/chrome/browser/sync/profile_sync_service.h
@@ -464,6 +464,14 @@ class ProfileSyncService : public browser_sync::SyncFrontend,
   SigninManager* signin() { return signin_.get(); }
   const std::string& cros_user() const { return cros_user_; }
 
+  // Returns any promo text the sync engine wants to display on the NTP, or an
+  // empty string if no promo is needed.
+  string16 GetSyncNotification() const;

[akalin, 2011/08/04 01:26:07]

notification is such an overloaded words nowadays. :( What about
GetSyncPromoText?

[Andrew T Wilson (Slow), 2011/08/07 02:45:38]

I decided I think it's a poor separation of concerns to have ProfileSyncService
generating UI strings, so I changed this to expose unacknowledged types, and
moved the UI logic up into the NTP code where it belongs.

+
+  // Marks all currently registered types as "acknowledged" so we won't prompt
+  // the user about them any more.
+  void AcknowledgeSyncedTypes();
+
  protected:
   // Used by test classes that derive from ProfileSyncService.
   virtual browser_sync::SyncBackendHost* GetBackendForTest();