Ensure sync footer visibility is always set correctly.

chrome/browser/ui/webui/welcome_handler_android.h

Index: chrome/browser/ui/webui/welcome_handler_android.h
diff --git a/chrome/browser/ui/webui/welcome_handler_android.h b/chrome/browser/ui/webui/welcome_handler_android.h
index 64fcdf2dbdfeb57acc1ca5210d8773da4a4874f7..b22f8958a2dffd48596407077313581a6f31fed0 100644
--- a/chrome/browser/ui/webui/welcome_handler_android.h
+++ b/chrome/browser/ui/webui/welcome_handler_android.h
@@ -40,6 +40,11 @@ class WelcomeHandler : public content::WebUIMessageHandler,
   virtual void OnStateChanged() OVERRIDE;
 
  private:
+  // Update the sync footer visibility. Set |forced| if you want to force to
+  // send an update to the renderer regardless of whether we assume the state
+  // is up to date or not.
+  void UpdateSyncFooterVisibility(bool forced);
+
   // Cached pointer to the sync service for this profile.
   ProfileSyncService* sync_service_;