Move more Mojo bindings helpers out of internal namespace

mojo/public/cpp/bindings/lib/message_builder.h

 // Copyright 2013 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_MESSAGE_BUILDER_H_
 #define MOJO_PUBLIC_CPP_BINDINGS_LIB_MESSAGE_BUILDER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 28 matching lines @@
                               size_t payload_size,
                               uint32_t flags,
                               uint64_t request_id);
 };
 
 class RequestMessageBuilder : public MessageWithRequestIDBuilder {
  public:
   RequestMessageBuilder(uint32_t name, size_t payload_size)
       : MessageWithRequestIDBuilder(name,
                                     payload_size,
-                                    kMessageExpectsResponse,
+                                    Message::kFlagExpectsResponse,
                                     0) {}
 
   RequestMessageBuilder(uint32_t name,
                         size_t payload_size,
                         uint32_t extra_flags)
       : MessageWithRequestIDBuilder(name,
                                     payload_size,
-                                    kMessageExpectsResponse | extra_flags,
+                                    Message::kFlagExpectsResponse | extra_flags,
                                     0) {}
 };
 
 class ResponseMessageBuilder : public MessageWithRequestIDBuilder {
  public:
   ResponseMessageBuilder(uint32_t name,
                          size_t payload_size,
                          uint64_t request_id)
       : MessageWithRequestIDBuilder(name,
                                     payload_size,
-                                    kMessageIsResponse,
+                                    Message::kFlagIsResponse,
                                     request_id) {}
 
   ResponseMessageBuilder(uint32_t name,
                          size_t payload_size,
                          uint64_t request_id,
                          uint32_t extra_flags)
       : MessageWithRequestIDBuilder(name,
                                     payload_size,
-                                    kMessageIsResponse | extra_flags,
+                                    Message::kFlagIsResponse | extra_flags,
                                     request_id) {}
 };
 
 }  // namespace internal
 }  // namespace mojo
 
 #endif  // MOJO_PUBLIC_CPP_BINDINGS_LIB_MESSAGE_BUILDER_H_