Add Chrome IME extensions to the whitelisted extensions for app.window.alpha

extensions/common/api/_permission_features.json

 // Copyright 2014 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.
 
 // This features file defines permissions for extension APIs implemented
 // under src/extensions.
 
 // See extensions/common/features/* to understand this file, in particular
 // feature.h, simple_feature.h, and base_feature_provider.h.
 
@@ skipping 34 matching lines @@
         "0F42756099D914A026DADFA182871C015735DD95",  // http://crbug.com/323773
         "2D22CDB6583FD0A13758AEBE8B15E45208B4E9A7",
         "E7E2461CE072DF036CF9592740196159E2D7C089",  // http://crbug.com/356200
         "A74A4D44C7CFCD8844830E6140C8D763E12DD8F3",
         "312745D9BF916161191143F6490085EEA0434997",
         "53041A2FA309EECED01FFC751E7399186E860B2C",
         "A07A5B743CD82A1C2579DB77D353C98A23201EEF",  // http://crbug.com/413748
         "F16F23C83C5F6DAD9B65A120448B34056DD80691",
         "0F585FB1D0FDFBEBCE1FEB5E9DFFB6DA476B8C9B"
       ]
+    },
+    {
+      "channel": "stable",
+      "extension_types": ["extension"],
+      "whitelist": [
+        "06BE211D5F014BAB34BC22D9DDA09C63A81D828E",  // http://crbug.com/425539
+        "F94EE6AB36D6C6588670B2B01EB65212D9C64E33"
+      ]
     }
   ],
   "app.window.shape": {
     "channel": "stable",
     "extension_types": ["platform_app"]
   },
   "app.window.ime": [
     {
        "channel": "stable",
        "extension_types": ["extension"],
@@ skipping 256 matching lines @@
     "extension_types": ["extension", "legacy_packaged_app"]
      }
   ],
   "webRequestBlocking": [
     {
     "channel": "stable",
     "extension_types": ["extension", "legacy_packaged_app"]
     }
   ]
 }