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 f94faa598b7f5c3a1b4dcf3176c1e3a53a2e32aa..c79565940cc3b4b986f39d8cce133234f33634df 100644
--- a/chrome/browser/sync/profile_sync_service.h
+++ b/chrome/browser/sync/profile_sync_service.h
@@ -471,6 +471,14 @@ class ProfileSyncService : public browser_sync::SyncFrontend,
   SigninManager* signin() { return signin_.get(); }
   const std::string& cros_user() const { return cros_user_; }
 
+  // Returns the set of unacknowledged types (new data types added since the
+  // last call to AcknowledgedSyncTypes())..
+  syncable::ModelTypeBitSet GetUnacknowledgedTypes() const;
+
+  // 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();