[Extensions] Make chrome://extensions use developerPrivate for inspect

chrome/common/extensions/api/developer_private.idl

 // 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.
 
 // developerPrivate API.
 // This is a private API exposing developing and debugging functionalities for
 // apps and extensions.
 namespace developerPrivate {
 
   enum ItemType {
@@ skipping 50 matching lines @@
     DOMString? update_url;
     InstallWarning[] install_warnings;
     any[] manifest_errors;
     any[] runtime_errors;
     boolean offline_enabled;
 
     // All views of the current extension.
     ItemInspectView[] views;
   };
 
+  // TODO(devlin): Combine inspect and openDevTools?
   dictionary InspectOptions {
     DOMString extension_id;
-    DOMString render_process_id;
-    DOMString render_view_id;
+    (DOMString or long) render_process_id;
+    (DOMString or long) render_view_id;
     boolean incognito;
   };
 
   dictionary ReloadOptions {
     // If false, an alert dialog will show in the event of a reload error.
     // Defaults to false.
     boolean? failQuietly;
   };
 
   dictionary LoadUnpackedOptions {
@@ skipping 208 matching lines @@
     // Open the developer tools to focus on a particular error.
     static void openDevTools(OpenDevToolsProperties properties);
   };
 
   interface Events {
     // Fired when a item state is changed.
     static void onItemStateChanged(EventData response);
   };
 
 };