Printing on Windows via PDF

chrome/browser/printing/pdf_to_emf_converter.h

Index: chrome/browser/printing/pdf_to_emf_converter.h
diff --git a/chrome/browser/printing/pdf_to_emf_converter.h b/chrome/browser/printing/pdf_to_emf_converter.h
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+++ b/chrome/browser/printing/pdf_to_emf_converter.h
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+// 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 CHROME_BROWSER_PRINTING_PDF_TO_EMF_CONVERTER_H_
+#define CHROME_BROWSER_PRINTING_PDF_TO_EMF_CONVERTER_H_
+
+#include "base/callback.h"
+#include "base/memory/ref_counted_memory.h"
+
+namespace base {
+class FilePath;
+}
+
+namespace printing {
+class PdfRenderSettings;
+}
+
+namespace printing {
+
+class PdfToEmfConverter {
+ public:
+  // Callback for when the PDF is converted to an EMF.
+  typedef base::Callback<void(double /*scale_factor*/,
+                              const std::vector<base::FilePath>& /*emf_files*/)>
+      ResultCallback;
+  virtual ~PdfToEmfConverter() {}
+
+  static scoped_ptr<PdfToEmfConverter> CreateDefault();
+
+  virtual void Start(base::RefCountedMemory* data,
+                     const printing::PdfRenderSettings& conversion_settings,
+                     const ResultCallback& callback) = 0;
+};
+
+}  // namespace printing
+
+#endif  // CHROME_BROWSER_PRINTING_PDF_TO_EMF_CONVERTER_H_