Make all ComplexFeatures of single feature to be SimpleFeature.

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 chrome/common/extensions/api/_features.md to understand this file, as
 // well as feature.h, simple_feature.h, and feature_provider.h.
 
 // If you add a new platform_app permission please update the "stubs_app" test:
@@ skipping 44 matching lines @@
         "06BE211D5F014BAB34BC22D9DDA09C63A81D828E",  // http://crbug.com/425539
         "F94EE6AB36D6C6588670B2B01EB65212D9C64E33",
         "B9EF10DDFEA11EF77873CC5009809E5037FC4C7A"   // http://crbug.com/435380
       ]
     }
   ],
   "app.window.shape": {
     "channel": "stable",
     "extension_types": ["platform_app"]
   },
-  "app.window.ime": [
-    {
-       "channel": "stable",
-       "extension_types": ["extension"],
-       "platforms": ["chromeos"],
-       "whitelist": [
-         "06BE211D5F014BAB34BC22D9DDA09C63A81D828E",
-         "F94EE6AB36D6C6588670B2B01EB65212D9C64E33",
-         "B9EF10DDFEA11EF77873CC5009809E5037FC4C7A"   // http://crbug.com/435380
-       ]
-    }
-  ],
+  "app.window.ime": {
+     "channel": "stable",
+     "extension_types": ["extension"],
+     "platforms": ["chromeos"],
+     "whitelist": [
+       "06BE211D5F014BAB34BC22D9DDA09C63A81D828E",
+       "F94EE6AB36D6C6588670B2B01EB65212D9C64E33",
+       "B9EF10DDFEA11EF77873CC5009809E5037FC4C7A"   // http://crbug.com/435380
+     ]
+  },
   "appview": {
     "channel": "stable",
     "extension_types": ["platform_app"]
   },
   "audio": [
     {
       "channel": "dev",
       "extension_types": ["platform_app"]
     },
     {
@@ skipping 362 matching lines @@
     {
       "channel": "stable",
       "extension_types": ["extension", "legacy_packaged_app", "platform_app"]
     },
     {
       "channel": "stable",
       "extension_types": ["hosted_app"],
       "whitelist": ["B44D08FD98F1523ED5837D78D0A606EA9D6206E5"]  // Web Store
     }
   ],
-  "u2fDevices": [
-    {
-      "channel": "stable",
-      "extension_types": ["extension", "platform_app"],
-      "whitelist": [
-        "496B6890097EB6E19809ADEADD095A8721FBB2E0",  // FIDO U2F APIs
-        "AD8ED80B705E1818AAD4684F9FF62B43D6D79620",  // FIDO U2F APIs (dev)
-        "E24F1786D842E91E74C27929B0B3715A4689A473",  // CryptoToken
-        "A28C9619C4C41306FA5236FB4D94DA812F504DE8",  // CryptoToken (dev)
-        "6F9E349A0561C78A0D3F41496FE521C5151C7F71",  // Security Key
-        "C06709A259378015404ED20F75C7D08547E0F10B"   // Security Key (dev)
-      ]
-    }
-  ],
+  "u2fDevices": {
+    "channel": "stable",
+    "extension_types": ["extension", "platform_app"],
+    "whitelist": [
+      "496B6890097EB6E19809ADEADD095A8721FBB2E0",  // FIDO U2F APIs
+      "AD8ED80B705E1818AAD4684F9FF62B43D6D79620",  // FIDO U2F APIs (dev)
+      "E24F1786D842E91E74C27929B0B3715A4689A473",  // CryptoToken
+      "A28C9619C4C41306FA5236FB4D94DA812F504DE8",  // CryptoToken (dev)
+      "6F9E349A0561C78A0D3F41496FE521C5151C7F71",  // Security Key
+      "C06709A259378015404ED20F75C7D08547E0F10B"   // Security Key (dev)
+    ]
+  },
   "unlimitedStorage": {
     "channel": "stable",
     "extension_types": [
       "extension", "legacy_packaged_app", "hosted_app", "platform_app"
     ]
   },
   "usb": [
     {
       "channel": "stable",
       "extension_types": ["platform_app"]
@@ skipping 83 matching lines @@
   }],
   "webRequest": {
     "channel": "stable",
     "extension_types": ["extension", "legacy_packaged_app"]
    },
   "webRequestBlocking": {
     "channel": "stable",
     "extension_types": ["extension", "legacy_packaged_app"]
   }
 }