Add help link when Bluetooth adapter is off for WebBluetooth chooser

chrome/browser/chooser_controller/chooser_controller.cc

Index: chrome/browser/chooser_controller/chooser_controller.cc
diff --git a/chrome/browser/chooser_controller/chooser_controller.cc b/chrome/browser/chooser_controller/chooser_controller.cc
index 9277f2b660c8bb9523ef91253efe2248db8eda61..af4c28f8ce14f343f9a41392d943cded050fe30c 100644
--- a/chrome/browser/chooser_controller/chooser_controller.cc
+++ b/chrome/browser/chooser_controller/chooser_controller.cc
@@ -4,6 +4,7 @@
 
 #include "chrome/browser/chooser_controller/chooser_controller.h"
 
+#include "base/logging.h"
 #include "base/strings/utf_string_conversions.h"
 #include "components/url_formatter/elide_url.h"
 #include "content/public/browser/render_frame_host.h"
@@ -66,3 +67,7 @@ bool ChooserController::IsConnected(size_t index) const {
 bool ChooserController::IsPaired(size_t index) const {
   return false;
 }
+
+void ChooserController::OpenAdapterOffHelpUrl() const {
+  NOTREACHED();
+}