Added a PolicyManifestHandler.

chrome/common/extensions/api/_manifest_features.json

Index: chrome/common/extensions/api/_manifest_features.json
diff --git a/chrome/common/extensions/api/_manifest_features.json b/chrome/common/extensions/api/_manifest_features.json
index be084cd0f965e9a1f179b7bdd0255d3f65ceb93b..62e859595941aecaefcc6337e240f807f0711245 100644
--- a/chrome/common/extensions/api/_manifest_features.json
+++ b/chrome/common/extensions/api/_manifest_features.json
@@ -306,6 +306,16 @@
     "channel": "dev",
     "extension_types": ["extension"]
   },
+  "storage": {
+    "channel": "dev",
+    "extension_types": "all",

[not at google - send to devlin, 2013/05/23 16:56:18]

hosted apps shouldn't have access, should be
extensions/platform_app/packaged_app.

[Joao da Silva, 2013/05/24 21:31:49]

Done.

+    "min_manifest_version": 2
+  },
+  "storage.managed_schema": {
+    "channel": "dev",
+    "extension_types": "all",

[not at google - send to devlin, 2013/05/23 16:56:18]

ditto

[Joao da Silva, 2013/05/24 21:31:49]

Done.

[not at google - send to devlin, 2013/05/25 00:50:57]

incidentally do you really need entries for both? I would have thought you'd
only need one for "storage".

+    "min_manifest_version": 2
+  },
   "system_indicator": {
     "channel": "dev",
     "extension_types": ["extension", "packaged_app", "platform_app"]