Update behavior of one-click infobar to remove modal dialog, add "undo".

chrome/browser/ui/gtk/browser_window_gtk.h

Index: chrome/browser/ui/gtk/browser_window_gtk.h
diff --git a/chrome/browser/ui/gtk/browser_window_gtk.h b/chrome/browser/ui/gtk/browser_window_gtk.h
index 5924cbeae9f910f79113f35c8bae9685da609842..13e52a919903c7678123c7e2e2e3c59c10247422 100644
--- a/chrome/browser/ui/gtk/browser_window_gtk.h
+++ b/chrome/browser/ui/gtk/browser_window_gtk.h
@@ -129,8 +129,7 @@ class BrowserWindowGtk : public BrowserWindow,
   virtual void ShowChromeToMobileBubble() OVERRIDE;
 #if defined(ENABLE_ONE_CLICK_SIGNIN)
   virtual void ShowOneClickSigninBubble(
-      const base::Closure& learn_more_callback,
-      const base::Closure& advanced_callback) OVERRIDE;
+      const StartSyncCallback& start_sync_callback) OVERRIDE;
 #endif
   virtual bool IsDownloadShelfVisible() const OVERRIDE;
   virtual DownloadShelf* GetDownloadShelf() OVERRIDE;