Wire up printing on the Mac

chrome/common/render_messages_internal.h

Index: chrome/common/render_messages_internal.h
diff --git a/chrome/common/render_messages_internal.h b/chrome/common/render_messages_internal.h
index d29d41dfc2e48a9727765eb9a7cc2c460bef9dfb..9003a49d38eadd2c1a532ef846cb55696b22c431 100644
--- a/chrome/common/render_messages_internal.h
+++ b/chrome/common/render_messages_internal.h
@@ -1341,7 +1341,7 @@ IPC_BEGIN_MESSAGES(ViewHost)
   IPC_SYNC_MESSAGE_ROUTED0_1(ViewHostMsg_GetDefaultPrintSettings,
                              ViewMsg_Print_Params /* default_settings */)
 
-#if defined(OS_WIN)
+#if defined(OS_WIN) || defined(OS_MACOSX)
   // It's the renderer that controls the printing process when it is generated
   // by javascript. This step is about showing UI to the user to select the
   // final print settings. The output parameter is the same as
@@ -1526,6 +1526,14 @@ IPC_BEGIN_MESSAGES(ViewHost)
                        int /* fd in browser */)
 #endif
 
+#if defined(OS_MACOSX)
+  // Asks the browser create a block of shared memory for the renderer to pass
+  // NativeMetafile data to the browser.
+  IPC_SYNC_MESSAGE_ROUTED1_1(ViewHostMsg_AllocatePDFTransport,
+                             size_t /* buffer size */,
+                             base::SharedMemoryHandle /* browser handle */)
+#endif
+
   // Provide the browser process with information about the WebCore resource
   // cache.
   IPC_MESSAGE_CONTROL1(ViewHostMsg_ResourceTypeStats,