Fix class name which has only space

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

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Peter Kelly (pmk@post.com)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012, 2013 Apple Inc.
  * All rights reserved.
  *           (C) 2007 Eric Seidel (eric@webkit.org)
  *
@@ skipping 1325 matching lines @@
     unsigned length) {
   DCHECK_GT(length, 0u);
 
   unsigned i = 0;
   do {
     if (isNotHTMLSpace<CharacterType>(characters[i]))
       break;
     ++i;
   } while (i < length);
 
-  if (i == length && length == 1)
-    return ClassStringContent::Empty;
-  if (i == length && length > 1)
+  if (i == length && length >= 1)
     return ClassStringContent::WhiteSpaceOnly;
 
   return ClassStringContent::HasClasses;
 }
 
 static inline ClassStringContent classStringHasClassName(
     const AtomicString& newClassString) {
   unsigned length = newClassString.length();
 
   if (!length)
@@ skipping 2723 matching lines @@
 }
 
 DEFINE_TRACE_WRAPPERS(Element) {
   if (hasRareData()) {
     visitor->traceWrappers(elementRareData());
   }
   ContainerNode::traceWrappers(visitor);
 }
 
 }  // namespace blink