Whitelist virtual keyboard extension to accept audioCapture and videoCapture permissions

chrome/common/extensions/api/_permission_features.json

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // See c/c/e/features/* to understand this file, in particular feature.h,
 // simple_feature.h, and base_feature_provider.h.
 
 {
   "activeTab": {
     "channel": "stable",
@@ skipping 38 matching lines @@
         "8C3741E3AF0B93B6E8E0DDD499BB0B74839EA578",
         "E703483CEF33DEC18B4B6DD84B5C776FB9182BDB"
       ]
     }
   ],
   "autotestPrivate": {
     "channel": "stable",
     "extension_types": ["extension", "legacy_packaged_app"],
     "location": "component"
   },
-  "audioCapture": {
-    "channel": "stable",
-    "extension_types": ["platform_app"]
-  },
+  "audioCapture": [
+    {
+      "channel": "stable",
+      "extension_types": ["platform_app"]
+    },
+    {
+      "channel": "stable",
+      "extension_types": ["extension"],
+      "whitelist": [
+        "mppnpdlheglhdfmldimlhpnegondlapf"  // http://crbug.com/292856
+      ]
+    }
+  ],
   "background": [
     {
       "channel": "stable",
       "extension_types": [
         "extension", "legacy_packaged_app", "hosted_app"
       ]
     },
     {
       "channel": "stable",
       "extension_types": ["platform_app"],
@@ skipping 617 matching lines @@
     ]
   },
   "usb": {
     "channel": "stable",
     "extension_types": ["platform_app"]
   },
   "usbDevices": {
     "channel": "stable",
     "extension_types": ["platform_app"]
   },
-  "videoCapture": {
-    "channel": "stable",
-    "extension_types": ["platform_app"]
-  },
+  "videoCapture": [
+    {
+      "channel": "stable",
+      "extension_types": ["platform_app"]
+    },
+    {
+      "channel": "stable",
+      "extension_types": ["extension"],
+      "whitelist": [
+        "mppnpdlheglhdfmldimlhpnegondlapf"  // http://crbug.com/292856
+      ]
+    }
+  ],
   "virtualKeyboardPrivate": {
     "channel": "stable",
     "whitelist": [
       "mppnpdlheglhdfmldimlhpnegondlapf"  // System-level virtual keyboard.
     ],
     "extension_types": ["extension"]
   },
   "wallpaper": {
     "channel": "dev",
     "extension_types": ["platform_app"]
@@ skipping 21 matching lines @@
   },
   "webRequestBlocking": {
     "channel": "stable",
     "extension_types": ["extension", "legacy_packaged_app"]
   },
   "webview": {
     "channel": "stable",
     "extension_types": ["platform_app"]
   }
 }