Add getUserSelectedDevices to the USB extensions API.

extensions/browser/api/device_permissions_prompt.cc

 // Copyright 2014 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 "extensions/browser/api/device_permissions_prompt.h"
 
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "content/public/browser/browser_thread.h"
 #include "device/core/device_client.h"
@@ skipping 155 matching lines @@
 void DevicePermissionsPrompt::Prompt::SetDevices(
     const std::vector<DeviceInfo>& devices) {
   devices_ = devices;
   if (observer_) {
     observer_->OnDevicesChanged();
   }
 }
 
 DevicePermissionsPrompt::DevicePermissionsPrompt(
     content::WebContents* web_contents)
-    : web_contents_(web_contents),
-      delegate_(nullptr) {
+    : web_contents_(web_contents), delegate_(nullptr) {
 }
 
 DevicePermissionsPrompt::~DevicePermissionsPrompt() {
 }
 
 void DevicePermissionsPrompt::AskForUsbDevices(
     Delegate* delegate,
     const Extension* extension,
     content::BrowserContext* context,
     bool multiple,
     const std::vector<UsbDeviceFilter>& filters) {
   prompt_ = new Prompt();
   prompt_->set_extension(extension);
   prompt_->set_browser_context(context);
   prompt_->set_multiple(multiple);
   prompt_->set_filters(filters);
   delegate_ = delegate;
 
-  GetDefaultShowDialogCallback().Run(web_contents_, delegate_, prompt_);
+  ShowDialog();
 }
 
 }  // namespace extensions