Initial support for cloudprint in print preview

chrome/common/print_messages.h

Index: chrome/common/print_messages.h
diff --git a/chrome/common/print_messages.h b/chrome/common/print_messages.h
index eb9327a5ca6d3bb5a398dcad4d474ec41489da1d..c0e875e4315597386b30925d66b758994a27c4e5 100644
--- a/chrome/common/print_messages.h
+++ b/chrome/common/print_messages.h
@@ -5,6 +5,8 @@
 // IPC messages for printing.
 // Multiply-included message file, hence no include guard.
 
+#include <string>
+
 #include "base/values.h"
 #include "base/shared_memory.h"
 #include "ipc/ipc_message_macros.h"
@@ -128,6 +130,14 @@ IPC_STRUCT_END()
 
 // Messages sent from the browser to the renderer.
 
+// Tells the renderer to setup or teardown a whitelist allowing the
+// print preview page to communicate with cloud print.
+IPC_MESSAGE_ROUTED1(PrintMsg_PrintSetupWhitelist,
+                    std::string /* host */)
+
+IPC_MESSAGE_ROUTED1(PrintMsg_PrintTeardownWhitelist,
+                    std::string /* host */)
+
 // Tells the render view to initiate print preview for the entire document.
 IPC_MESSAGE_ROUTED0(PrintMsg_InitiatePrintPreview)