[bindings] Bindings should only support the prescribed types for constants.

Source/bindings/core/v8/V8DOMConfiguration.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 137 matching lines @@
     case V8DOMConfiguration::ConstantTypeUnsignedShort:
         value = v8::Integer::New(isolate, constant.ivalue);
         break;
     case V8DOMConfiguration::ConstantTypeUnsignedLong:
         value = v8::Integer::NewFromUnsigned(isolate, constant.ivalue);
         break;
     case V8DOMConfiguration::ConstantTypeFloat:
     case V8DOMConfiguration::ConstantTypeDouble:
         value = v8::Number::New(isolate, constant.dvalue);
         break;
-    case V8DOMConfiguration::ConstantTypeString:
-        value = v8AtomicString(isolate, constant.svalue);
-        break;
     default:
         ASSERT_NOT_REACHED();
     }
     functionDescriptor->Set(constantName, value, attributes);
     prototypeTemplate->Set(constantName, value, attributes);
 }
 
 void doInstallMethodInternal(v8::Local<v8::ObjectTemplate> target, v8::Local<v8::Name> name, v8::Local<v8::FunctionTemplate> functionTemplate, v8::PropertyAttribute attribute)
 {
     target->Set(name, functionTemplate, attribute);
@@ skipping 130 matching lines @@
         return result;
 
     TRACE_EVENT_SCOPED_SAMPLING_STATE("blink", "BuildDOMTemplate");
     result = v8::FunctionTemplate::New(isolate, V8ObjectConstructor::isValidConstructorMode);
     configureDOMClassTemplate(result, isolate);
     data->setDOMTemplate(wrapperTypeInfo, result);
     return result;
 }
 
 } // namespace blink