Add PermissionDescriptor to the permissions Mojo interface.

third_party/WebKit/Source/modules/permissions/PermissionUtils.h

Index: third_party/WebKit/Source/modules/permissions/PermissionUtils.h
diff --git a/third_party/WebKit/Source/modules/permissions/PermissionUtils.h b/third_party/WebKit/Source/modules/permissions/PermissionUtils.h
new file mode 100644
index 0000000000000000000000000000000000000000..e2a0d09ea9b585df2714a060f9806307cfb17b57
--- /dev/null
+++ b/third_party/WebKit/Source/modules/permissions/PermissionUtils.h
@@ -0,0 +1,22 @@
+// 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.
+
+#ifndef PermissionUtils_h
+#define PermissionUtils_h
+
+#include "public/platform/modules/permissions/permission.mojom-blink.h"
+
+namespace blink {
+
+class ExecutionContext;
+
+bool connectToPermissionService(ExecutionContext*, mojom::blink::PermissionServiceRequest);
+
+mojom::blink::PermissionDescriptorPtr createPermissionDescriptor(mojom::blink::PermissionName);
+
+mojom::blink::PermissionDescriptorPtr createMidiPermissionDescriptor(bool sysex);
+
+} // namespace blink
+
+#endif // PermissionUtils_h