Add UMA for the number of devices in the chooser when a device is paired

chrome/browser/android/tab_web_contents_delegate_android.h

Index: chrome/browser/android/tab_web_contents_delegate_android.h
diff --git a/chrome/browser/android/tab_web_contents_delegate_android.h b/chrome/browser/android/tab_web_contents_delegate_android.h
index 3f5575913ac8e9586b2621d59fc4e2a74f2b4abd..461bc0cc77c29a5cf3cd5bc87ae43fc1f32a150b 100644
--- a/chrome/browser/android/tab_web_contents_delegate_android.h
+++ b/chrome/browser/android/tab_web_contents_delegate_android.h
@@ -43,7 +43,8 @@ class TabWebContentsDelegateAndroid
                       const content::FileChooserParams& params) override;
   std::unique_ptr<content::BluetoothChooser> RunBluetoothChooser(
       content::RenderFrameHost* frame,
-      const content::BluetoothChooser::EventHandler& event_handler) override;
+      const content::BluetoothChooser::EventHandler& event_handler,
+      bool accept_all_devices) override;
   void CloseContents(content::WebContents* web_contents) override;
   bool ShouldFocusLocationBarByDefault(content::WebContents* source) override;
   blink::WebDisplayMode GetDisplayMode(