Block printing from blocked popup.

chrome/common/print_messages.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // IPC messages for printing.
 // Multiply-included message file, hence no include guard.
 
 #include <string>
 #include <vector>
 
@@ skipping 363 matching lines @@
 // Notify the browser a print preview page has been rendered.
 IPC_MESSAGE_ROUTED1(PrintHostMsg_DidPreviewPage,
                     PrintHostMsg_DidPreviewPage_Params /* params */)
 
 // Asks the browser whether the print preview has been cancelled.
 IPC_SYNC_MESSAGE_ROUTED2_1(PrintHostMsg_CheckForCancel,
                            std::string /* print preview ui address */,
                            int /* request id */,
                            bool /* print preview cancelled */)
 
+// Asks the browser whether scripted printing is allowed.
+IPC_SYNC_MESSAGE_ROUTED0_1(PrintHostMsg_CheckScriptedPrintAllowed,
+                           bool /* print allowed */)
+
 // Sends back to the browser the complete rendered document (non-draft mode,
 // used for printing) that was requested by a PrintMsg_PrintPreview message.
 // The memory handle in this message is already valid in the browser process.
 IPC_MESSAGE_ROUTED1(PrintHostMsg_MetafileReadyForPrinting,
                     PrintHostMsg_DidPreviewDocument_Params /* params */)
 
 // Tell the browser printing failed.
 IPC_MESSAGE_ROUTED1(PrintHostMsg_PrintingFailed,
                     int /* document cookie */)
 
 // Tell the browser print preview failed.
 IPC_MESSAGE_ROUTED1(PrintHostMsg_PrintPreviewFailed,
                     int /* document cookie */)
 
 // Tell the browser print preview was cancelled.
 IPC_MESSAGE_ROUTED1(PrintHostMsg_PrintPreviewCancelled,
                     int /* document cookie */)
 
 // Tell the browser print preview found the selected printer has invalid
 // settings (which typically caused by disconnected network printer or printer
 // driver is bogus).
 IPC_MESSAGE_ROUTED1(PrintHostMsg_PrintPreviewInvalidPrinterSettings,
                     int /* document cookie */)
 
 // Run a nested message loop in the renderer until print preview for
 // window.print() finishes.
 IPC_SYNC_MESSAGE_ROUTED1_0(PrintHostMsg_ScriptedPrintPreview,
                            bool /* is_modifiable */)