blink: permissions: add plumbing to revoke permissions

Source/modules/permissions/Permissions.h

 // 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.
 
 #ifndef Permissions_h
 #define Permissions_h
 
 #include "bindings/core/v8/ScriptPromise.h"
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "platform/heap/Handle.h"
+#include "public/platform/modules/permissions/WebPermissionType.h"

[mlamouri (slow - plz ping), 2015/07/20 14:14:12]

nit: I think you can remove that header.

 
 namespace blink {
 
 class ScriptState;
 class ScriptValue;
 
 class Permissions final
     : public GarbageCollected<Permissions>
     , public ScriptWrappable {
     DEFINE_WRAPPERTYPEINFO();
 public:
     DEFINE_INLINE_TRACE() { }
 
     ScriptPromise query(ScriptState*, const ScriptValue&);
+    ScriptPromise revoke(ScriptState*, const ScriptValue&);
 };
 
 } // namespace blink
 
 #endif // Permissions_h