Add a 'type' property to ExtensionInfo (chrome.management).

chrome/common/extensions/api/management.json

 // 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.
 
 [
   {
     "namespace":"management",
     "types": [
       {
         "id": "IconInfo",
-        "description": "Information about an icon belonging to an extension or app.",
+        "description": "Information about an icon belonging to an extension, app, or theme.",
         "type": "object",
         "properties": {
           "size": { "type": "integer", "description": "A number representing the width and height of the icon. Likely values include (but are not limited to) 128, 48, 24, and 16."  },
           "url": { "type": "string", "description": "The URL for this icon image. To display a grayscale version of the icon (to indicate that an extension is disabled, for example), append <code>?grayscale=true</code> to the URL." }
         }
       },
       {
         "id": "ExtensionInfo",
-        "description": "Information about an installed extension or app.",
+        "description": "Information about an installed extension, app, or theme.",
         "type": "object",
         "properties": {
           "id": {
             "description": "The extension's unique identifier.",
             "type": "string"
           },
           "name": {
-            "description": "The name of this extension or app.",
+            "description": "The name of this extension, app, or theme.",
             "type": "string"
           },
           "description": {
-            "description": "The description of this extension or app.",
+            "description": "The description of this extension, app, or theme.",
             "type": "string"
           },
           "version": {
-            "description": "The <a href='manifest.html#version'>version</a> of this extension or app.",
+            "description": "The <a href='manifest.html#version'>version</a> of this extension, app, or theme.",
             "type": "string"
           },
           "mayDisable": {
             "description": "Whether this extension can be disabled or uninstalled by the user.",
             "type": "boolean"
           },
           "enabled": {
             "description": "Whether it is currently enabled or disabled.",
             "type": "boolean"
           },
           "disabledReason": {
             "description": "A reason the item is disabled.",
             "type": "string",
             "enum": ["unknown", "permissions_increase"],
             "optional": true
           },
           "isApp": {
             "description": "True if this is an app.",
-            "type": "boolean"
+            "type": "boolean",
+            "nodoc": true
+          },
+          "type": {
+            "description": "The type of this extension, app, or theme.",
+            "type": "string",
+            "enum": ["extension", "hosted_app", "packaged_app", "platform_app", "theme"]

[Mihai Parparita -not on Chrome, 2012/08/11 00:03:19]

"platform app" is not the public name we're using. We're calling them "packaged
apps", and the old ones are "legacy packaged apps".

[mitchellwrosen, 2012/08/11 00:06:01]

s/platform_app/legacy_packaged_app
s/packaged_app/platform_app

?

           },
           "appLaunchUrl": {
             "description": "The launch url (only present for apps).",
             "type": "string",
             "optional": true
           },
           "homepageUrl": {
-            "description": "The URL of the homepage of this extension or app.",
+            "description": "The URL of the homepage of this extension, app, or theme.",
             "type": "string",
             "optional": true
           },
           "updateUrl": {
-            "description": "The update URL of this extension or app.",
+            "description": "The update URL of this extension, app, or theme.",
             "type": "string",
             "optional": true
           },
           "offlineEnabled": {
-            "description": "Whether the extension or app declares that it supports offline.",
+            "description": "Whether the extension, app, or theme declares that it supports offline.",
             "type": "boolean"
           },
           "optionsUrl": {
             "description": "The url for the item's options page, if it has one.",
             "type": "string"
           },
           "icons": {
             "description": "A list of icon information. Note that this just reflects what was declared in the manifest, and the actual image at that url may be larger or smaller than what was declared, so you might consider using explicit width and height attributes on img tags referencing these images. See the <a href='manifest.html#icons'>manifest documentation on icons</a> for more details.",
             "type": "array",
             "optional": true,
@@ skipping 39 matching lines @@
                 "items": {
                   "$ref": "ExtensionInfo"
                 }
               }
             ]
           }
         ]
       },
       {
         "name": "get",
-        "description": "Returns information about the installed extension or app that has the given ID.",
+        "description": "Returns information about the installed extension, app, or theme that has the given ID.",
         "parameters": [
           {
             "name": "id",
             "type": "string",
             "description": "The ID from an item of $ref:ExtensionInfo."
           },
           {
             "type": "function",
             "name": "callback",
             "optional": "true",
@@ skipping 128 matching lines @@
         "parameters": [{"name": "info", "$ref":"ExtensionInfo"}]
       },
       {
         "name": "onUninstalled",
         "description": "Fired when an app or extension has been uninstalled.",
         "type": "function",
         "parameters": [
           {
            "name": "id",
            "type": "string",
-           "description": "The id of the extension or app that was uninstalled."
+           "description": "The id of the extension, app, or theme that was uninstalled."
           }
         ]
       },
       {
         "name": "onEnabled",
         "description": "Fired when an app or extension has been enabled.",
         "type": "function",
         "parameters": [{"name": "info", "$ref":"ExtensionInfo"}]
       },
       {
         "name": "onDisabled",
         "description": "Fired when an app or extension has been disabled",
         "type": "function",
         "parameters": [{"name": "info", "$ref":"ExtensionInfo"}]
       }
     ]
   }
 ]