| Index: mojo/system/message_pipe.h | 
| diff --git a/mojo/system/message_pipe.h b/mojo/system/message_pipe.h | 
| index d8266f709a70431a4a609cb7971e72566bb61303..2be2acd84631dd6e443036b07b2239b89c29ec39 100644 | 
| --- a/mojo/system/message_pipe.h | 
| +++ b/mojo/system/message_pipe.h | 
| @@ -12,6 +12,7 @@ | 
| #include "base/memory/scoped_ptr.h" | 
| #include "base/synchronization/lock.h" | 
| #include "mojo/public/system/core.h" | 
| +#include "mojo/public/system/system_export.h" | 
| #include "mojo/system/waiter_list.h" | 
|  | 
| namespace mojo { | 
| @@ -23,7 +24,8 @@ class Waiter; | 
| // |MessagePipe| is the secondary object implementing a message pipe (see the | 
| // explanatory comment in core_impl.cc), and is jointly owned by the two | 
| // dispatchers passed in to the constructor. This class is thread-safe. | 
| -class MessagePipe : public base::RefCountedThreadSafe<MessagePipe> { | 
| +class MOJO_SYSTEM_EXPORT MessagePipe : | 
| +    public base::RefCountedThreadSafe<MessagePipe> { | 
| public: | 
| MessagePipe(); | 
|  | 
|  |