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

Source/bindings/core/v8/V8DOMConfiguration.cpp

Index: Source/bindings/core/v8/V8DOMConfiguration.cpp
diff --git a/Source/bindings/core/v8/V8DOMConfiguration.cpp b/Source/bindings/core/v8/V8DOMConfiguration.cpp
index bafbb216027a66bba1cbd0dcb809fc56e8c13e83..7b1d16b80361887b20037e14d48a73a26635a10d 100644
--- a/Source/bindings/core/v8/V8DOMConfiguration.cpp
+++ b/Source/bindings/core/v8/V8DOMConfiguration.cpp
@@ -155,9 +155,6 @@ void installConstantInternal(v8::Isolate* isolate, v8::Local<v8::FunctionTemplat
     case V8DOMConfiguration::ConstantTypeDouble:
         value = v8::Number::New(isolate, constant.dvalue);
         break;
-    case V8DOMConfiguration::ConstantTypeString:
-        value = v8AtomicString(isolate, constant.svalue);
-        break;
     default:
         ASSERT_NOT_REACHED();
     }