Fix compilation on Windows with enable_printing=2.

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"
 #include "chrome/browser/local_discovery/privet_url_fetcher.h"
-#include "chrome/browser/local_discovery/pwg_raster_converter.h"
 #include "net/base/host_port_pair.h"
 
 namespace base {
 class RefCountedBytes;
 }
 
 namespace gfx {
 class Size;
 }
 
 namespace printing {
 class PdfRenderSettings;
 }
 
 namespace local_discovery {
 
+class PWGRasterConverter;
 class PrivetHTTPClient;
 
 // Represents a simple request that returns pure JSON.
 class PrivetJSONOperation {
  public:
   // If value is null, the operation failed.
   typedef base::Callback<void(
       const base::DictionaryValue* /*value*/)> ResultCallback;
 
   virtual ~PrivetJSONOperation() {}
@@ skipping 167 matching lines @@
       const PrivetJSONOperation::ResultCallback& callback) = 0;
 
   // Creates operation to submit print job to local printer.
   virtual scoped_ptr<PrivetLocalPrintOperation> CreateLocalPrintOperation(
       PrivetLocalPrintOperation::Delegate* delegate) = 0;
 
 };
 
 }  // namespace local_discovery
 #endif  // CHROME_BROWSER_LOCAL_DISCOVERY_PRIVET_HTTP_H_