(reland) Move permission.mojom from WebKit/public/platform/ to components/

components/permissions.gypi

+# Copyright 2016 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.
+
+{
+  'variables': {
+    'chromium_code': 1,
+  },
+  'targets': [
+    {
+      # GN version: //components/permissions:mojo_bindings
+      'target_name': 'permissions_mojo_bindings',
+      'type': 'static_library',
+      'includes': [
+        '../mojo/mojom_bindings_generator.gypi',
+      ],
+      'sources': [
+        'permissions/permission.mojom',
+        'permissions/permission_status.mojom',
+      ],
+    },
+  ],
+}