Update mojo sdk to rev f84766d3b6420b7cf6a113d9d65d73cb5fe18d90

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

Index: third_party/mojo/src/mojo/public/cpp/bindings/lib/control_message_handler.h
diff --git a/third_party/mojo/src/mojo/public/cpp/bindings/lib/control_message_handler.h b/third_party/mojo/src/mojo/public/cpp/bindings/lib/control_message_handler.h
new file mode 100644
index 0000000000000000000000000000000000000000..4a2fed5e51f5297341ca94c22522b65fce7cdae6
--- /dev/null
+++ b/third_party/mojo/src/mojo/public/cpp/bindings/lib/control_message_handler.h
@@ -0,0 +1,42 @@
+// 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_HANDLER_H_
+#define MOJO_PUBLIC_CPP_BINDINGS_LIB_CONTROL_MESSAGE_HANDLER_H_
+
+#include <stdint.h>
+
+#include "mojo/public/cpp/bindings/message.h"
+#include "mojo/public/cpp/system/macros.h"
+
+namespace mojo {
+namespace internal {
+
+// Handlers for request messages defined in interface_control_messages.mojom.
+class ControlMessageHandler : public MessageReceiverWithResponderStatus {
+ public:
+  static bool IsControlMessage(const Message* message);
+
+  explicit ControlMessageHandler(uint32_t interface_version);
+  ~ControlMessageHandler() override;
+
+  // Call the following methods only if IsControlMessage() returned true.
+  bool Accept(Message* message) override;
+  // Takes ownership of |responder|.
+  bool AcceptWithResponder(Message* message,
+                           MessageReceiverWithStatus* responder) override;
+
+ private:
+  bool Run(Message* message, MessageReceiverWithStatus* responder);
+  bool RunOrClosePipe(Message* message);
+
+  uint32_t interface_version_;
+
+  MOJO_DISALLOW_COPY_AND_ASSIGN(ControlMessageHandler);
+};
+
+}  // namespace internal
+}  // namespace mojo
+
+#endif  // MOJO_PUBLIC_CPP_BINDINGS_LIB_CONTROL_MESSAGE_HANDLER_H_