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

chrome/common/extensions/api/browsing_data.json

Index: chrome/common/extensions/api/browsing_data.json
diff --git a/chrome/common/extensions/api/browsing_data.json b/chrome/common/extensions/api/browsing_data.json
index 332186d2aef06aafcd3e462f2b2f9162db8e4c48..67f29e66451932994616b96abe43171448db6c74 100644
--- a/chrome/common/extensions/api/browsing_data.json
+++ b/chrome/common/extensions/api/browsing_data.json
@@ -96,15 +96,20 @@
             "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",