[Sync Promo UI] Change data reporting to differentiate between startup and other

chrome/browser/ui/webui/sync_promo/sync_promo_ui.h

Index: chrome/browser/ui/webui/sync_promo/sync_promo_ui.h
diff --git a/chrome/browser/ui/webui/sync_promo/sync_promo_ui.h b/chrome/browser/ui/webui/sync_promo/sync_promo_ui.h
index 2a3e4cb04e9dcfcc073beee1be21ff7983185262..5079c1063d5e4b24e00bd3807f9754c1c0bf1c12 100644
--- a/chrome/browser/ui/webui/sync_promo/sync_promo_ui.h
+++ b/chrome/browser/ui/webui/sync_promo/sync_promo_ui.h
@@ -30,6 +30,9 @@ class SyncPromoUI : public ChromeWebUI {
   // of the number of times we've displayed it.
   static void DidShowSyncPromoAtStartup(Profile* profile);
 
+  // Returns true if a user has seen the sync promo at startup previously.
+  static bool HasShownPromoAtStartup(Profile* profile);
+
   // Returns true if the user has previously skipped the sync promo.
   static bool HasUserSkippedSyncPromo(Profile* profile);