Blimp: create MessageDispatcher class.

blimp/net/blimp_net_export.h

Index: blimp/net/blimp_net_export.h
diff --git a/blimp/net/blimp_net_export.h b/blimp/net/blimp_net_export.h
new file mode 100644
index 0000000000000000000000000000000000000000..7d0a76c40d620334dcd067fb81043ef5a42ee912
--- /dev/null
+++ b/blimp/net/blimp_net_export.h
@@ -0,0 +1,29 @@
+// 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 BLIMP_NET_BLIMP_NET_EXPORT_H_
+#define BLIMP_NET_BLIMP_NET_EXPORT_H_
+
+#if defined(COMPONENT_BUILD)
+#if defined(WIN32)
+
+#if defined(BLIMP_NET_IMPLEMENTATION)
+#define BLIMP_NET_EXPORT __declspec(dllexport)
+#else
+#define BLIMP_NET_EXPORT __declspec(dllimport)
+#endif  // defined(BLIMP_NET_IMPLEMENTATION)
+
+#else  // defined(WIN32)
+#if defined(BLIMP_NET_IMPLEMENTATION)
+#define BLIMP_NET_EXPORT __attribute__((visibility("default")))
+#else
+#define BLIMP_NET_EXPORT
+#endif  // defined(BLIMP_NET_IMPLEMENTATION)
+#endif
+
+#else  // defined(COMPONENT_BUILD)
+#define BLIMP_NET_EXPORT
+#endif
+
+#endif  // BLIMP_NET_BLIMP_NET_EXPORT_H_