Tunnel the CDD from the Print Preview javascript to the privet operation

chrome/browser/local_discovery/privet_http.h

 // Copyright 2013 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_LOCAL_DISCOVERY_PRIVET_HTTP_H_
 #define CHROME_BROWSER_LOCAL_DISCOVERY_PRIVET_HTTP_H_
 
 #include <string>
 
 #include "base/callback.h"
@@ skipping 123 matching lines @@
 
   virtual void Start() = 0;
 
 
   // Required print data. MUST be called before calling |Start()|.
   virtual void SetData(base::RefCountedBytes* data) = 0;
 
   // Optional attributes for /submitdoc. Call before calling |Start()|
   // |ticket| should be in CJT format.
   virtual void SetTicket(const std::string& ticket) = 0;
+  // |capabilities| should be in CDD format.
+  virtual void SetCapabilities(const std::string& capabilities) = 0;
   // Username and jobname are for display only.
   virtual void SetUsername(const std::string& username) = 0;
   virtual void SetJobname(const std::string& jobname) = 0;
   // If |offline| is true, we will indicate to the printer not to post the job
   // to Google Cloud Print.
   virtual void SetOffline(bool offline) = 0;
   // Document page size.
   virtual void SetPageSize(const gfx::Size& page_size) = 0;
 
   // For testing, inject an alternative PWG raster converter.
@@ skipping 23 matching lines @@
   virtual scoped_ptr<PrivetDataReadOperation> CreateStorageReadOperation(
       const std::string& path,
       const PrivetDataReadOperation::ResultCallback& callback) = 0;
 
   // A name for the HTTP client, e.g. the device name for the privet device.
   virtual const std::string& GetName() = 0;
 };
 
 }  // namespace local_discovery
 #endif  // CHROME_BROWSER_LOCAL_DISCOVERY_PRIVET_HTTP_H_