arc-bridge: Add IPC message definitions

chromeos/arc/bridge/common/arc_message_generator.h

Index: chromeos/arc/bridge/common/arc_message_generator.h
diff --git a/chrome/browser/resources/chromeos/login/gaia_header.js b/chromeos/arc/bridge/common/arc_message_generator.h
similarity index 57%
copy from chrome/browser/resources/chromeos/login/gaia_header.js
copy to chromeos/arc/bridge/common/arc_message_generator.h
index 69898a4e223333b0e8ab849df9582b0c38530546..674ff89d6ee59e61a7ff3b68d82aa6bacf334fa8 100644
--- a/chrome/browser/resources/chromeos/login/gaia_header.js
+++ b/chromeos/arc/bridge/common/arc_message_generator.h
@@ -2,10 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-Polymer({
-  is: 'gaia-header',
+// Multiply-included message file, hence no include guard.
 
-  properties: {
-    email: String
-  }
-});
+#include "arc_host_messages.h"

[hidehiko, 2015/10/28 16:47:31]

Ok, so then, could you add brief comments why this is relative to the
chromeos/arc/bridge/common unlike other code in Chrome?

[Luis Héctor Chávez, 2015/10/28 17:28:49]

Done.

+#include "arc_instance_messages.h"