Move dns API to dev channel

chrome/common/extensions/api/experimental_dns.idl

-// 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.
-
-// Experimental.dns.
-namespace experimental.dns {
-
-  dictionary ResolveCallbackResolveInfo {
-    // The result code. Zero indicates success.
-    long resultCode;
-
-    // A string representing the IP address literal. Supplied only if resultCode
-    // indicates success. Note that we presently return only IPv4 addresses.
-    DOMString? address;
-  };
-
-  callback ResolveCallback = void (ResolveCallbackResolveInfo resolveInfo);
-
-  interface Functions {
-    // Resolves the given hostname or IP address literal.
-    // |hostname| : The hostname to resolve.
-    // |callback| : Called when the resolution operation completes.
-    static void resolve(DOMString hostname,
-                        ResolveCallback callback);
-  };
-
-};