Move chrome.usb to //extensions

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.
 
 // This features file defines permissions for extension APIs implemented
 // under src/chrome.
 // See extensions/common/features/* to understand this file, in particular
 // feature.h, simple_feature.h, and base_feature_provider.h.
 
 // To add a new whitelisted ID, SHA-1 it and force it to uppercase. In Bash:
@@ skipping 856 matching lines @@
   "ttsEngine": {
     "channel": "stable",
     "extension_types": ["extension", "legacy_packaged_app"]
   },
   "unlimitedStorage": {
     "channel": "stable",
     "extension_types": [
       "extension", "legacy_packaged_app", "hosted_app", "platform_app"
     ]
   },
-  "usb": [
-    {
-      "channel": "stable",
-      "extension_types": ["platform_app"]
-    },
-    {
-      "channel": "stable",
-      "extension_types": ["extension"],
-      "whitelist": [
-        "496B6890097EB6E19809ADEADD095A8721FBB2E0",  // FIDO U2F APIs
-        "E24F1786D842E91E74C27929B0B3715A4689A473"   // CryptoToken
-      ]
-    }
-  ],
-  "usbDevices": [
-    {
-      "channel": "stable",
-      "extension_types": ["platform_app"]
-    },
-    {
-      "channel": "stable",
-      "extension_types": ["extension"],
-      "whitelist": [
-        "496B6890097EB6E19809ADEADD095A8721FBB2E0",  // FIDO U2F APIs
-        "E24F1786D842E91E74C27929B0B3715A4689A473"   // CryptoToken
-      ]
-    }
-  ],
   "videoCapture": [
     {
       "channel": "stable",
       "extension_types": ["platform_app"]
     },
     {
       "channel": "stable",
       "extension_types": ["extension"],
       "whitelist": [
         // http://crbug.com/292856
@@ skipping 74 matching lines @@
     // Only allowed for whitelisted extensions until all the caveats are
     // addressed. Tracked in crbug/285151.
     "channel": "stable",
     "extension_types": ["extension"],
     "location": "component",
     "whitelist": [
       "D519188F86D9ACCEE0412007B227D9936EB9676B"  // GAIA Component Extension
     ]
   }]
 }