Implement support for <extensionoptions> embedding in WebUI

chrome/common/extensions/api/_api_features.json

Index: chrome/common/extensions/api/_api_features.json
diff --git a/chrome/common/extensions/api/_api_features.json b/chrome/common/extensions/api/_api_features.json
index 7051eb58dadca513bc6afc12f8c0ca1477bf87ec..d0ebe4fda602ebe612149906a3e4e71907c4ee16 100644
--- a/chrome/common/extensions/api/_api_features.json
+++ b/chrome/common/extensions/api/_api_features.json
@@ -375,11 +375,16 @@
   "extension.sendRequest": {
     "contexts": ["blessed_extension", "unblessed_extension", "content_script"]
   },
-  "extensionOptionsInternal": {
+  "extensionOptionsInternal": [{
     "internal": true,
     "contexts": ["blessed_extension"],
     "dependencies": ["permission:embeddedExtensionOptions"]
-  },
+  }, {
+    "internal": true,
+    "channel": "trunk",
+    "contexts": ["webui"],
+    "matches": ["chrome://extensions-frame/*", "chrome://extensions/*"]
+  }],
   // This is not a real API, only here for documentation purposes.
   // See http://crbug.com/275944 for background.
   "extensionsManifestTypes": {
@@ -453,6 +458,11 @@
     "internal": true,
     "dependencies": ["permission:webview"],
     "contexts": ["unblessed_extension"]
+  }, {
+    "internal": true,
+    "channel": "trunk",
+    "contexts": ["webui"],
+    "matches": ["chrome://extensions-frame/*", "chrome://extensions/*"]
   }],
   "hangoutsPrivate": {
     "channel": "stable",