URL.search should return the set value via setSearch

third_party/WebKit/Source/core/dom/DOMURLUtils.cpp

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  * Copyright (C) 2012 Motorola Mobility Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 105 matching lines @@
 
 void DOMURLUtils::setSearchInternal(const String& value) {
   DCHECK(!m_isInUpdate);
   KURL kurl = url();
   if (!kurl.isValid())
     return;
 
   // FIXME: have KURL do this clearing of the query component
   // instead, if practical. Will require addressing
   // http://crbug.com/108690, for one.
-  if (value[0] == '?')
-    kurl.setQuery(value.length() == 1 ? String() : value.substring(1));
+  if ((value.length() == 1 && value[0] == '?') || value.isEmpty())
+    kurl.setQuery(String());
   else
-    kurl.setQuery(value.isEmpty() ? String() : value);
+    kurl.setQuery(value);
 
   setURL(kurl);
 }
 
 void DOMURLUtils::setHash(const String& value) {
   KURL kurl = url();
   if (kurl.isNull())
     return;
 
   // FIXME: have KURL handle the clearing of the fragment component
   // on the same input.
   if (value[0] == '#')
     kurl.setFragmentIdentifier(value.length() == 1 ? String()
                                                    : value.substring(1));
   else
     kurl.setFragmentIdentifier(value.isEmpty() ? String() : value);
 
   setURL(kurl);
 }
 
 }  // namespace blink