listen to ipc messages from plugin to perform SaveAs op

chromium_src/components/pdf/common/pdf_messages.h

@@ -0,0 +1,26 @@
+// Copyright 2014 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.
+
+// Multiply-included file, no traditional include guard.
+#include <string.h>
+
+#include "content/public/common/common_param_traits_macros.h"
+#include "content/public/common/referrer.h"
+#include "ipc/ipc_message_macros.h"
+#include "url/gurl.h"
+#include "url/ipc/url_param_traits.h"
+
+#define IPC_MESSAGE_START PDFMsgStart
+
+// Updates the content restrictions, i.e. to disable print/copy.
+IPC_MESSAGE_ROUTED1(PDFHostMsg_PDFUpdateContentRestrictions,
+                    int /* restrictions */)
+
+// The currently displayed PDF has an unsupported feature.
+IPC_MESSAGE_ROUTED0(PDFHostMsg_PDFHasUnsupportedFeature)
+
+// Brings up SaveAs... dialog to save specified URL.
+IPC_MESSAGE_ROUTED2(PDFHostMsg_PDFSaveURLAs,
+                    GURL /* url */,
+                    content::Referrer /* referrer */)