Add the "serviceWorker" key to the browsingData API. Support in the C++ was

chrome/common/extensions/api/browsing_data.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": "browsingData",
     "description": "Use the <code>chrome.browsingData</code> API to remove browsing data from a user's local profile.",
     "types": [
       {
@@ skipping 78 matching lines @@
           "localStorage": {
             "type": "boolean",
             "optional": true,
             "description": "Websites' local storage data."
           },
           "serverBoundCertificates": {
             "type": "boolean",
             "optional": true,
             "description": "Server-bound certificates."
           },
+          "passwords": {
+            "type": "boolean",
+            "optional": true,
+            "description": "Stored passwords."
+          },
           "pluginData": {
             "type": "boolean",
             "optional": true,
             "description": "Plugins' data."
           },
-          "passwords": {
+          "serviceWorkers": {
             "type": "boolean",
             "optional": true,
-            "description": "Stored passwords."
+            "description": "Service workers."

[jsbell, 2014/08/15 20:52:05]

Nit: capitalize Service Workers. (per dominicc@)

[not at google - send to devlin, 2014/08/15 21:41:57]

Done.

           },
           "webSQL": {
             "type": "boolean",
             "optional": true,
             "description": "Websites' WebSQL data."
           }
         }
       }
     ],
     "functions": [
@@ skipping 262 matching lines @@
             "type": "function",
             "description": "Called when websites' WebSQL databases have been cleared.",
             "optional": true,
             "parameters": []
           }
         ]
       }
     ]
   }
 ]