Reset Bluetooth EventHandler when it is invalid

content/browser/bluetooth/bluetooth_metrics.h

Index: content/browser/bluetooth/bluetooth_metrics.h
diff --git a/content/browser/bluetooth/bluetooth_metrics.h b/content/browser/bluetooth/bluetooth_metrics.h
index 34aae8c2dfc26382d1cbc1c8accbe671b3a91f4b..9fc0bd12629af9922f7ec3476856764f0dcebd2c 100644
--- a/content/browser/bluetooth/bluetooth_metrics.h
+++ b/content/browser/bluetooth/bluetooth_metrics.h
@@ -73,6 +73,7 @@ enum class UMARequestDeviceOutcome {
   NEED_LOCATION_HELP_LINK_PRESSED = 14,
   BLUETOOTH_CHOOSER_POLICY_DISABLED = 15,
   BLUETOOTH_GLOBALLY_DISABLED = 16,
+  BLUETOOTH_CHOOSER_EVENT_HANDLER_INVALID = 17,
   // NOTE: Add new requestDevice() outcomes immediately above this line. Make
   // sure to update the enum list in
   // tools/metrics/histograms/histograms.xml accordingly.
@@ -82,7 +83,7 @@ enum class UMARequestDeviceOutcome {
 // There should be a call to this function before every
 // Send(BluetoothMsg_RequestDeviceSuccess...) or
 // Send(BluetoothMsg_RequestDeviceError...).
-void RecordRequestDeviceOutcome(UMARequestDeviceOutcome outcome);
+CONTENT_EXPORT void RecordRequestDeviceOutcome(UMARequestDeviceOutcome outcome);
 
 // Records stats about the arguments used when calling requestDevice.
 //  - The number of filters used.