Make printing work better with OOPIF. (try 2)

ipc/ipc_message_macros.h

Index: ipc/ipc_message_macros.h
diff --git a/ipc/ipc_message_macros.h b/ipc/ipc_message_macros.h
index 38f428e90aaa185f59cefe4fee46d9a5ed6546f4..237c4e2c56db0237f775a648bce9070cbe448341 100644
--- a/ipc/ipc_message_macros.h
+++ b/ipc/ipc_message_macros.h
@@ -180,6 +180,9 @@
 // Use the IPC_MESSAGE_HANDLER_DELAY_REPLY macro instead of IPC_MESSAGE_HANDLER
 //     IPC_MESSAGE_HANDLER_DELAY_REPLY(ViewHostMsg_SyncMessageName,
 //                                     OnSyncMessageName)
+// Unlike IPC_MESSAGE_HANDLER which works with IPC_BEGIN_MESSAGE_MAP as well as
+// IPC_BEGIN_MESSAGE_MAP_WITH_PARAM, one needs to use
+// IPC_MESSAGE_HANDLER_WITH_PARAM_DELAY_REPLY to properly handle the param.
 //
 // The handler function will look like:
 //     void OnSyncMessageName(const type1& in1, IPC::Message* reply_msg);
@@ -371,6 +374,20 @@
     IPC_MESSAGE_FORWARD_DELAY_REPLY(msg_class, this,                           \
                                     _IpcMessageHandlerClass::member_func)
 
+#define IPC_MESSAGE_FORWARD_WITH_PARAM_DELAY_REPLY(msg_class, obj,             \
+                                                   member_func)                \
+  case msg_class::ID: {                                                        \
+    TRACK_RUN_IN_THIS_SCOPED_REGION(member_func);                              \
+    if (!msg_class::DispatchWithParamDelayReply(&ipc_message__, obj, param__,  \
+                                                &member_func))                 \
+      ipc_message__.set_dispatch_error();                                      \
+  }                                                                            \
+  break;
+
+#define IPC_MESSAGE_HANDLER_WITH_PARAM_DELAY_REPLY(msg_class, member_func)     \
+    IPC_MESSAGE_FORWARD_WITH_PARAM_DELAY_REPLY(                                \
+        msg_class, this, _IpcMessageHandlerClass::member_func)
+
 // TODO(jar): fix chrome frame to always supply |code| argument.
 #define IPC_MESSAGE_HANDLER_GENERIC(msg_class, code)                           \
     case msg_class::ID: {                                                      \