Add message and Help Center link to the chooser UI

chrome/browser/ui/bluetooth/bluetooth_chooser_bubble_delegate.cc

Index: chrome/browser/ui/bluetooth/bluetooth_chooser_bubble_delegate.cc
diff --git a/chrome/browser/ui/bluetooth/bluetooth_chooser_bubble_delegate.cc b/chrome/browser/ui/bluetooth/bluetooth_chooser_bubble_delegate.cc
index 7db53f219718fc244b83ae32966e3166541fc39e..10ad62bb15e95eb242be6a25818efbe48a1e8911 100644
--- a/chrome/browser/ui/bluetooth/bluetooth_chooser_bubble_delegate.cc
+++ b/chrome/browser/ui/bluetooth/bluetooth_chooser_bubble_delegate.cc
@@ -6,7 +6,9 @@
 
 #include "base/stl_util.h"
 #include "chrome/browser/ui/bluetooth/bluetooth_chooser_desktop.h"
+#include "chrome/common/url_constants.h"
 #include "components/bubble/bubble_controller.h"
+#include "url/gurl.h"
 
 BluetoothChooserBubbleDelegate::BluetoothChooserBubbleDelegate(
     content::RenderFrameHost* owner)
@@ -56,6 +58,10 @@ void BluetoothChooserBubbleDelegate::Close() {
   }
 }
 
+GURL BluetoothChooserBubbleDelegate::GetHelpCenterUrl() const {
+  return GURL(chrome::kChooserBluetoothOverviewURL);
+}
+
 void BluetoothChooserBubbleDelegate::AddDevice(
     const std::string& device_id,
     const base::string16& device_name) {