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

content/shell/browser/layout_test/blink_test_controller.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_SHELL_BROWSER_LAYOUT_TEST_BLINK_TEST_CONTROLLER_H_
 #define CONTENT_SHELL_BROWSER_LAYOUT_TEST_BLINK_TEST_CONTROLLER_H_
 
 #include <map>
 #include <memory>
 #include <ostream>
@@ skipping 130 matching lines @@
   // monitored for crashes.
   void HandleNewRenderFrameHost(RenderFrameHost* frame);
 
   void SetTempPath(const base::FilePath& temp_path);
   void RendererUnresponsive();
   void OverrideWebkitPrefs(WebPreferences* prefs);
   void OpenURL(const GURL& url);
   bool IsMainWindow(WebContents* web_contents) const;
   std::unique_ptr<BluetoothChooser> RunBluetoothChooser(
       RenderFrameHost* frame,
-      const BluetoothChooser::EventHandler& event_handler);
+      const BluetoothChooser::EventHandler& event_handler,
+      bool accept_all_devices);
 
   BlinkTestResultPrinter* printer() { return printer_.get(); }
   void set_printer(BlinkTestResultPrinter* printer) { printer_.reset(printer); }
 
   void DevToolsProcessCrashed();
 
   // WebContentsObserver implementation.
   bool OnMessageReceived(const IPC::Message& message) override;
   bool OnMessageReceived(const IPC::Message& message,
                          RenderFrameHost* render_frame_host) override;
@@ skipping 121 matching lines @@
   // waiting on the UI thread while layout tests are being ran.
   ScopedAllowWaitForAndroidLayoutTests reduced_restrictions_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(BlinkTestController);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_SHELL_BROWSER_LAYOUT_TEST_BLINK_TEST_CONTROLLER_H_