Implement the feedbackPrivate API.

chrome/common/extensions/api/_permission_features.json

Index: chrome/common/extensions/api/_permission_features.json
diff --git a/chrome/common/extensions/api/_permission_features.json b/chrome/common/extensions/api/_permission_features.json
index 0647b46f42fe76cd07465f5ed01b8c109dfcc599..0dbdf2790f50727bc899a4f57dc942d330977c33 100644
--- a/chrome/common/extensions/api/_permission_features.json
+++ b/chrome/common/extensions/api/_permission_features.json
@@ -204,6 +204,13 @@
       "extension", "packaged_app", "hosted_app", "platform_app"
     ]
   },
+  "feedbackPrivate": {
+    "channel": "stable",
+    "extension_types": ["extension", "platform_app"],
+    "whitelist": [
+      "gfdkimpbcpahaombhbimeihdjnejgicl" // Feedback UI.

[asargent_no_longer_on_chrome, 2013/06/17 20:50:14]

In case you need it (probably not in this case, but just FYI):

http://shortn/_hPPpuPq7HM

[rkc, 2013/06/17 21:48:19]

No real reason not to use the hash instead.
Done.

+    ]
+  },
   "fileBrowserHandler": {
     "channel": "stable",
     "extension_types": ["extension", "packaged_app", "platform_app"]