bindings: Use Maybe version of v8::String::NewFromUtf8()

Source/bindings/core/v8/V8NPUtils.cpp

 /*
  * Copyright (C) 2008, 2009 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 76 matching lines @@
     case NPVariantType_Double:
         return v8::Number::New(isolate, NPVARIANT_TO_DOUBLE(*variant));
     case NPVariantType_Bool:
         return v8Boolean(NPVARIANT_TO_BOOLEAN(*variant), isolate);
     case NPVariantType_Null:
         return v8::Null(isolate);
     case NPVariantType_Void:
         return v8::Undefined(isolate);
     case NPVariantType_String: {
         NPString src = NPVARIANT_TO_STRING(*variant);
-        return v8::String::NewFromUtf8(isolate, src.UTF8Characters, v8::String::kNormalString, src.UTF8Length);
+        return v8NormalString(isolate, src.UTF8Characters, src.UTF8Length);
     }
     case NPVariantType_Object: {
         NPObject* object = NPVARIANT_TO_OBJECT(*variant);
         if (V8NPObject* v8Object = npObjectToV8NPObject(object))
             return v8::Local<v8::Object>::New(isolate, v8Object->v8Object);
         return createV8ObjectForNPObject(isolate, object, owner);
     }
     default:
         return v8::Undefined(isolate);
     }
@@ skipping 54 matching lines @@
 ExceptionCatcher::~ExceptionCatcher()
 {
     if (!m_tryCatch.HasCaught())
         return;
 
     if (topHandler)
         topHandler->handler(topHandler->data, *v8::String::Utf8Value(m_tryCatch.Exception()));
 }
 
 } // namespace blink