Add title property to chrome.printerProvider pritn job

chrome/browser/ui/webui/print_preview/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_PRINTER_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_PRINT_PREVIEW_PRINTER_HANDLER_H_
 
 #include <string>
 
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/strings/string16.h"
 
 namespace base {
 class DictionaryValue;
 class ListValue;
 class RefCountedMemory;
 }
 
 namespace content {
 class BrowserContext;
 }
@@ skipping 31 matching lines @@
 
   // Starts getting printing capability of the printer with the provided
   // destination ID.
   // |callback| should be called in the response to the request.
   virtual void StartGetCapability(const std::string& destination_id,
                                   const GetCapabilityCallback& callback) = 0;
 
   // Starts a print request.
   // |destination_id|: The printer to which print job should be sent.
   // |capability|: Capability reported by the printer.
+  // |job_title|: The  title used for print job.
   // |ticket_json|: The print job ticket as JSON string.
   // |page_size|: The document page size.
   // |print_data|: The document bytes to print.
   // |callback| should be called in the response to the request.
   // TODO(tbarzic): Page size should be extracted from print data.
   virtual 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 PrintCallback& callback) = 0;
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_PRINT_PREVIEW_PRINTER_HANDLER_H_