Remove the ENABLE_NOSNIFF compile-time flag.

Source/WebCore/platform/network/HTTPParsers.cpp

 /*
  * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Torch Mobile Inc. http://www.torchmobile.com/
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * Copyright (C) 2011 Apple 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:
@@ skipping 420 matching lines @@
             reportURL = header.substring(startPos, pos - startPos);
             failurePosition = startPos; // If later semantic check deems unacceptable.
         } else {
             failureReason = failureReasonInvalidDirective;
             failurePosition = pos;
             return ContentSecurityPolicy::ReflectedXSSInvalid;
         }
     }
 }
 
-#if ENABLE(NOSNIFF)
 ContentTypeOptionsDisposition parseContentTypeOptionsHeader(const String& header)
 {
     if (header.stripWhiteSpace().lower() == "nosniff")
         return ContentTypeOptionsNosniff;
     return ContentTypeOptionsNone;
 }
-#endif
 
 String extractReasonPhraseFromHTTPStatusLine(const String& statusLine)
 {
     size_t spacePos = statusLine.find(' ');
     // Remove status code from the status line.
     spacePos = statusLine.find(' ', spacePos + 1);
     return statusLine.substring(spacePos + 1);
 }
 
 XFrameOptionsDisposition parseXFrameOptionsHeader(const String& header)
@@ skipping 218 matching lines @@
 
 size_t parseHTTPRequestBody(const char* data, size_t length, Vector<unsigned char>& body)
 {
     body.clear();
     body.append(data, length);
 
     return length;
 }
 
 }