Update mojo sdk to rev f84766d3b6420b7cf6a113d9d65d73cb5fe18d90

third_party/mojo/src/mojo/public/cpp/bindings/lib/control_message_proxy.h

Index: third_party/mojo/src/mojo/public/cpp/bindings/lib/control_message_proxy.h
diff --git a/third_party/mojo/src/mojo/public/cpp/bindings/lib/control_message_proxy.h b/third_party/mojo/src/mojo/public/cpp/bindings/lib/control_message_proxy.h
new file mode 100644
index 0000000000000000000000000000000000000000..5b0f018d6ccb99687744110a5773e3650a70d975
--- /dev/null
+++ b/third_party/mojo/src/mojo/public/cpp/bindings/lib/control_message_proxy.h
@@ -0,0 +1,38 @@
+// Copyright 2015 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 MOJO_PUBLIC_CPP_BINDINGS_LIB_CONTROL_MESSAGE_PROXY_H_
+#define MOJO_PUBLIC_CPP_BINDINGS_LIB_CONTROL_MESSAGE_PROXY_H_
+
+#include <stdint.h>
+
+#include "mojo/public/cpp/bindings/callback.h"
+#include "mojo/public/cpp/system/macros.h"
+
+namespace mojo {
+
+class MessageReceiverWithResponder;
+
+namespace internal {
+
+// Proxy for request messages defined in interface_control_messages.mojom.
+class ControlMessageProxy {
+ public:
+  // Doesn't take ownership of |receiver|. It must outlive this object.
+  explicit ControlMessageProxy(MessageReceiverWithResponder* receiver);
+
+  void QueryVersion(const Callback<void(uint32_t)>& callback);
+  void RequireVersion(uint32_t version);
+
+ protected:
+  // Not owned.
+  MessageReceiverWithResponder* receiver_;
+
+  MOJO_DISALLOW_COPY_AND_ASSIGN(ControlMessageProxy);
+};
+
+}  // namespace internal
+}  // namespace mojo
+
+#endif  // MOJO_PUBLIC_CPP_BINDINGS_LIB_CONTROL_MESSAGE_PROXY_H_