Add more extensions to the list.

extensions/common/api/_behavior_features.json

Index: extensions/common/api/_behavior_features.json
diff --git a/extensions/common/api/_behavior_features.json b/extensions/common/api/_behavior_features.json
index 67171f7abdded44456f54b36416253f96a48f638..b05f1fc9e297a85684f6375b4711c34a72ac6cbd 100644
--- a/extensions/common/api/_behavior_features.json
+++ b/extensions/common/api/_behavior_features.json
@@ -75,12 +75,19 @@
     "channel": "stable",
     "component_extensions_auto_granted": false,
     "platforms": ["chromeos"],
-    "location": "external_component",
     "whitelist": [
       "E24F1786D842E91E74C27929B0B3715A4689A473",  // Gnubby component extension
       "6F9E349A0561C78A0D3F41496FE521C5151C7F71",  // Gnubby app
       "8EBDF73405D0B84CEABB8C7513C9B9FA9F1DC2CE",  // Genius app (help)
-      "3F50C3A83839D9C76334BCE81CDEC06174F266AF"   // Virtual Keyboard
+      "06BE211D5F014BAB34BC22D9DDA09C63A81D828E",  // Chrome OS XKB
+      "3F50C3A83839D9C76334BCE81CDEC06174F266AF",  // Virtual Keyboard
+      "2F47B526FA71F44816618C41EC55E5EE9543FDCC",  // Braille Keyboard
+      "86672C8D7A04E24EFB244BF96FE518C4C4809F73",  // Speech synthesis
+      "1CF709D51B2B96CF79D00447300BD3BFBE401D21",  // Mobile activation
+      "D519188F86D9ACCEE0412007B227D9936EB9676B",  // Gaia auth extension
+      "40FF1103292F40C34066E023B8BE8CAE18306EAE",  // Chromeos help
+      "3C654B3B6682CA194E75AD044CEDE927675DDEE8",  // Easy unlock
+      "2FCBCE08B34CCA1728A85F1EFBD9A34DD2558B2E"   // ChromeVox
     ]
   }
   ]