Create ipc.dll.

ipc/ipc_channel_proxy.h

Index: ipc/ipc_channel_proxy.h
===================================================================
--- ipc/ipc_channel_proxy.h	(revision 96780)
+++ ipc/ipc_channel_proxy.h	(working copy)
@@ -47,14 +47,14 @@
 // The consumer of IPC::ChannelProxy is responsible for allocating the Thread
 // instance where the IPC::Channel will be created and operated.
 //
-class ChannelProxy : public Message::Sender {
+class IPC_EXPORT ChannelProxy : public Message::Sender {
  public:
 
   struct MessageFilterTraits;
 
   // A class that receives messages on the thread where the IPC channel is
   // running.  It can choose to prevent the default action for an IPC message.
-  class MessageFilter
+  class IPC_EXPORT MessageFilter
       : public base::RefCountedThreadSafe<MessageFilter, MessageFilterTraits> {
    public:
     MessageFilter();