Add help link when Bluetooth adapter is off for WebBluetooth chooser

chrome/browser/chooser_controller/chooser_controller.h

Index: chrome/browser/chooser_controller/chooser_controller.h
diff --git a/chrome/browser/chooser_controller/chooser_controller.h b/chrome/browser/chooser_controller/chooser_controller.h
index 6e3f69a1a5ea9987a662f14e9f1c613a3042d324..5faceec34bec860d6bcb273b7389fe8b3581ca45 100644
--- a/chrome/browser/chooser_controller/chooser_controller.h
+++ b/chrome/browser/chooser_controller/chooser_controller.h
@@ -114,6 +114,9 @@ class ChooserController {
   // Open help center URL.
   virtual void OpenHelpCenterUrl() const = 0;
 
+  // Provide help information when the adapter is off.
+  virtual void OpenAdapterOffHelpUrl() const;
+
   // Only one view may be registered at a time.
   void set_view(View* view) { view_ = view; }
   View* view() const { return view_; }