Remove dead content sniffing code

Source/web/AssociatedURLLoader.cpp

 /*
  * Copyright (C) 2010, 2011, 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 323 matching lines @@
     }
 
     m_clientAdapter = ClientAdapter::create(this, m_client, m_options);
 
     if (allowLoad) {
         ThreadableLoaderOptions options;
         options.preflightPolicy = static_cast<PreflightPolicy>(m_options.preflightPolicy);
         options.crossOriginRequestPolicy = static_cast<CrossOriginRequestPolicy>(m_options.crossOriginRequestPolicy);
 
         ResourceLoaderOptions resourceLoaderOptions;
-        resourceLoaderOptions.sniffContent = m_options.sniffContent ? SniffContent : DoNotSniffContent;
         resourceLoaderOptions.allowCredentials = m_options.allowCredentials ? AllowStoredCredentials : DoNotAllowStoredCredentials;
         resourceLoaderOptions.dataBufferingPolicy = DoNotBufferData;
 
         const ResourceRequest& webcoreRequest = newRequest.toResourceRequest();
         if (webcoreRequest.requestContext() == WebURLRequest::RequestContextUnspecified) {
             // FIXME: We load URLs without setting a TargetType (and therefore a request context) in several
             // places in content/ (P2PPortAllocatorSession::AllocateLegacyRelaySession, for example). Remove
             // this once those places are patched up.
             newRequest.setRequestContext(WebURLRequest::RequestContextInternal);
         }
@@ skipping 16 matching lines @@
         m_loader->cancel();
 }
 
 void AssociatedURLLoader::setDefersLoading(bool defersLoading)
 {
     if (m_loader)
         m_loader->setDefersLoading(defersLoading);
 }
 
 } // namespace blink