[Chrome] Support NumCopies print preset

ppapi/cpp/dev/printing_dev.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.
 
 #ifndef PPAPI_CPP_DEV_PRINTING_DEV_H_
 #define PPAPI_CPP_DEV_PRINTING_DEV_H_
 
 #include "ppapi/c/dev/ppp_printing_dev.h"
 #include "ppapi/cpp/completion_callback.h"
 #include "ppapi/cpp/instance_handle.h"
@@ skipping 22 matching lines @@
 
   // PPB_Printing_Dev functions.
   // Returns true if the browser supports the required PPB_Printing_Dev
   // interface.
   static bool IsAvailable();
 
   // Get the default print settings and store them in the output of |callback|.
   int32_t GetDefaultPrintSettings(
       const CompletionCallbackWithOutput<PP_PrintSettings_Dev>& callback) const;
 
+  void SetPrintPresetOptionsFromDocument(
+      PP_PrintPresetOptions_Dev& print_options);
+
  private:
   InstanceHandle associated_instance_;
 };
 
 }  // namespace pp
 
 #endif  // PPAPI_CPP_DEV_PRINTING_DEV_H_