Create 2272 release branch for CEF3.

git-svn-id: https://chromiumembedded.googlecode.com/svn/branches/2272@1993 5089003a-bbd8-11dd-ad1f-f1f9622dbc98

libcef/utility/printing_handler.h

@@ -0,0 +1,57 @@
+// 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.
+
+#ifndef LIBCEF_UTILITY_PRINTING_HANDLER_H_
+#define LIBCEF_UTILITY_PRINTING_HANDLER_H_
+
+#include "base/compiler_specific.h"
+#include "base/macros.h"
+#include "chrome/utility/utility_message_handler.h"
+#include "ipc/ipc_platform_file.h"
+#include "printing/pdf_render_settings.h"
+
+#if !defined(OS_WIN)
+#error "Must be building on Windows."
+#endif
+
+namespace printing {
+class PdfRenderSettings;
+struct PwgRasterSettings;
+struct PageRange;
+}
+
+// Dispatches IPCs for printing.
+class PrintingHandler : public UtilityMessageHandler {
+ public:
+  PrintingHandler();
+  ~PrintingHandler() override;
+
+  static void PreSandboxStartup();
+
+  // IPC::Listener:
+  bool OnMessageReceived(const IPC::Message& message) override;
+
+ private:
+  // IPC message handlers.
+#if defined(OS_WIN)
+  void OnRenderPDFPagesToMetafile(IPC::PlatformFileForTransit pdf_transit,
+                                  const printing::PdfRenderSettings& settings);
+  void OnRenderPDFPagesToMetafileGetPage(
+      int page_number,
+      IPC::PlatformFileForTransit output_file);
+  void OnRenderPDFPagesToMetafileStop();
+
+  int LoadPDF(base::File pdf_file);
+  bool RenderPdfPageToMetafile(int page_number,
+                               base::File output_file,
+                               double* scale_factor);
+
+  std::vector<char> pdf_data_;
+  printing::PdfRenderSettings pdf_rendering_settings_;
+#endif  // defined(OS_WIN)
+
+  DISALLOW_COPY_AND_ASSIGN(PrintingHandler);
+};
+
+#endif  // LIBCEF_UTILITY_PRINTING_HANDLER_H_