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

chrome/browser/android/tab_web_contents_delegate_android.cc

 // Copyright 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.
 
 #include "chrome/browser/android/tab_web_contents_delegate_android.h"
 
 #include <stddef.h>
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
@@ skipping 109 matching lines @@
 
 void TabWebContentsDelegateAndroid::RunFileChooser(
     content::RenderFrameHost* render_frame_host,
     const FileChooserParams& params) {
   FileSelectHelper::RunFileChooser(render_frame_host, params);
 }
 
 std::unique_ptr<BluetoothChooser>
 TabWebContentsDelegateAndroid::RunBluetoothChooser(
     content::RenderFrameHost* frame,
-    const BluetoothChooser::EventHandler& event_handler) {
+    const BluetoothChooser::EventHandler& event_handler,
+    bool accept_all_devices) {
   return base::MakeUnique<BluetoothChooserAndroid>(frame, event_handler);
 }
 
 void TabWebContentsDelegateAndroid::CloseContents(
     WebContents* web_contents) {
   // Prevent dangling registrations assigned to closed web contents.
   if (notification_registrar_.IsRegistered(this,
       chrome::NOTIFICATION_FIND_RESULT_AVAILABLE,
       content::Source<WebContents>(web_contents))) {
     notification_registrar_.Remove(this,
@@ skipping 337 matching lines @@
 void NotifyStopped(JNIEnv* env,
                    const JavaParamRef<jclass>& clazz,
                    const JavaParamRef<jobject>& java_web_contents) {
   content::WebContents* web_contents =
       content::WebContents::FromJavaWebContents(java_web_contents);
   scoped_refptr<MediaStreamCaptureIndicator> indicator =
       MediaCaptureDevicesDispatcher::GetInstance()
           ->GetMediaStreamCaptureIndicator();
   indicator->NotifyStopped(web_contents);
 }