Remove all uses of the ASCIILiteral class.

Source/modules/mediastream/MediaConstraintsImpl.cpp

 /*
  * Copyright (C) 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:
  *
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 45 matching lines @@
 }
 
 bool MediaConstraintsImpl::initialize(const Dictionary& constraints)
 {
     if (constraints.isUndefinedOrNull())
         return true;
 
     Vector<String> names;
     constraints.getOwnPropertyNames(names);
 
-    String mandatory = ASCIILiteral("mandatory");
-    String optional = ASCIILiteral("optional");
+    String mandatory("mandatory");
+    String optional("optional");
 
     for (Vector<String>::iterator it = names.begin(); it != names.end(); ++it) {
         if (*it != mandatory && *it != optional)
             return false;
     }
 
     if (names.contains(mandatory)) {
         Dictionary mandatoryConstraints;
         bool ok = constraints.get(mandatory, mandatoryConstraints);
         if (!ok || mandatoryConstraints.isUndefinedOrNull())
@@ skipping 71 matching lines @@
         if (i->m_name == name) {
             value = i->m_value;
             return true;
         }
     }
 
     return false;
 }
 
 } // namespace WebCore