Update app info and install prompt UI to show retained devices.

chrome/browser/extensions/api/developer_private/developer_private_api.cc

 // 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.
 
 #include "chrome/browser/extensions/api/developer_private/developer_private_api.h"
 
 #include "apps/app_load_service.h"
+#include "apps/saved_devices_service.h"
 #include "apps/saved_files_service.h"
 #include "base/base64.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/files/file_enumerator.h"
 #include "base/files/file_util.h"
 #include "base/i18n/file_util_icu.h"
 #include "base/lazy_instance.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 733 matching lines @@
   std::vector<base::FilePath> retained_file_paths;
   if (extension->permissions_data()->HasAPIPermission(
           APIPermission::kFileSystem)) {
     std::vector<apps::SavedFileEntry> retained_file_entries =
         apps::SavedFilesService::Get(GetProfile())
             ->GetAllFileEntries(extension_id_);
     for (size_t i = 0; i < retained_file_entries.size(); i++) {
       retained_file_paths.push_back(retained_file_entries[i].path);
     }
   }
-  prompt_->ReviewPermissions(this, extension, retained_file_paths);
+  std::vector<base::string16> retained_device_messages;
+  if (extension->permissions_data()->HasAPIPermission(APIPermission::kUsb)) {
+    retained_device_messages = apps::SavedDevicesService::Get(GetProfile())
+                                   ->GetPermissionMessageStrings(extension_id_);
+  }
+  prompt_->ReviewPermissions(
+      this, extension, retained_file_paths, retained_device_messages);
   return true;
 }
 
 DeveloperPrivateReloadFunction::~DeveloperPrivateReloadFunction() {}
 
 // This is called when the user clicks "Revoke File Access."
 void DeveloperPrivateShowPermissionsDialogFunction::InstallUIProceed() {
   Profile* profile = GetProfile();
   const Extension* extension = ExtensionRegistry::Get(
       profile)->GetExtensionById(extension_id_, ExtensionRegistry::EVERYTHING);
@@ skipping 623 matching lines @@
   }
 
   error_ui_util::HandleOpenDevTools(dict);
 
   return true;
 }
 
 }  // namespace api
 
 }  // namespace extensions