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

chrome/browser/android/tab_web_contents_delegate_android.h

 // Copyright (c) 2012 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 CHROME_BROWSER_ANDROID_TAB_WEB_CONTENTS_DELEGATE_ANDROID_H_
 #define CHROME_BROWSER_ANDROID_TAB_WEB_CONTENTS_DELEGATE_ANDROID_H_
 
 #include <jni.h>
 
 #include "base/files/file_path.h"
@@ skipping 25 matching lines @@
  public:
   TabWebContentsDelegateAndroid(JNIEnv* env, jobject obj);
   ~TabWebContentsDelegateAndroid() override;
 
   void LoadingStateChanged(content::WebContents* source,
                            bool to_different_document) override;
   void RunFileChooser(content::RenderFrameHost* render_frame_host,
                       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(
       const content::WebContents* web_contents) const override;
   void FindReply(content::WebContents* web_contents,
                  int request_id,
                  int number_of_matches,
                  const gfx::Rect& selection_rect,
                  int active_match_ordinal,
                  bool final_update) override;
@@ skipping 42 matching lines @@
 
   content::NotificationRegistrar notification_registrar_;
 };
 
 // Register the native methods through JNI.
 bool RegisterTabWebContentsDelegateAndroid(JNIEnv* env);
 
 }  // namespace android
 
 #endif  // CHROME_BROWSER_ANDROID_TAB_WEB_CONTENTS_DELEGATE_ANDROID_H_