Initial support for cloudprint in print preview

chrome/common/print_messages.h

 // Copyright (c) 2011 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 "base/values.h"
 #include "base/shared_memory.h"
 #include "ipc/ipc_message_macros.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/gfx/rect.h"
 
 #define IPC_MESSAGE_START PrintMsgStart
 
 // Parameters for a render request.
 IPC_STRUCT_BEGIN(PrintMsg_Print_Params)
@@ skipping 103 matching lines @@
   IPC_STRUCT_MEMBER(gfx::NativeViewId, host_window_id)
   IPC_STRUCT_MEMBER(int, cookie)
   IPC_STRUCT_MEMBER(int, expected_pages_count)
   IPC_STRUCT_MEMBER(bool, has_selection)
   IPC_STRUCT_MEMBER(bool, use_overlays)
 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)
 
 // Tells the render view to initiate printing or print preview for a particular
 // node, depending on which mode the render view is in.
 IPC_MESSAGE_ROUTED0(PrintMsg_PrintNodeUnderContextMenu)
 
 // Tells the renderer to print the print preview tab's PDF plugin without
 // showing the print dialog. (This is the final step in the print preview
 // workflow.)
@@ skipping 79 matching lines @@
 IPC_MESSAGE_ROUTED1(PrintHostMsg_PagesReadyForPreview,
                     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 */)