Add title property to chrome.printerProvider pritn job

chrome/browser/ui/webui/print_preview/extension_printer_handler.h

 // Copyright 2015 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_UI_WEBUI_PRINT_PREVIEW_EXTENSION_PRINTER_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_PRINT_PREVIEW_EXTENSION_PRINTER_HANDLER_H_
 
 #include <string>
 
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
+#include "base/strings/string16.h"
 #include "chrome/browser/ui/webui/print_preview/printer_handler.h"
 #include "extensions/browser/api/printer_provider/printer_provider_api.h"
 
 namespace base {
 class DictionaryValue;
 class ListValue;
 class RefCountedMemory;
 class TaskRunner;
 }
 
@@ skipping 29 matching lines @@
   // PrinterHandler implementation:
   void Reset() override;
   void StartGetPrinters(
       const PrinterHandler::GetPrintersCallback& callback) override;
   void StartGetCapability(
       const std::string& destination_id,
       const PrinterHandler::GetCapabilityCallback& calback) override;
   // TODO(tbarzic): It might make sense to have the strings in a single struct.
   void StartPrint(const std::string& destination_id,
                   const std::string& capability,
+                  const base::string16& job_title,
                   const std::string& ticket_json,
                   const gfx::Size& page_size,
                   const scoped_refptr<base::RefCountedMemory>& print_data,
                   const PrinterHandler::PrintCallback& callback) override;
 
  private:
   friend class ExtensionPrinterHandlerTest;
 
   void SetPwgRasterConverterForTesting(
       scoped_ptr<local_discovery::PWGRasterConverter> pwg_raster_converter);
@@ skipping 34 matching lines @@
   scoped_ptr<local_discovery::PWGRasterConverter> pwg_raster_converter_;
 
   scoped_refptr<base::TaskRunner> slow_task_runner_;
 
   base::WeakPtrFactory<ExtensionPrinterHandler> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionPrinterHandler);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_PRINT_PREVIEW_EXTENSION_PRINTER_HANDLER_H_