Remove containsAttributeSelector() checks.

sky/engine/core/css/SelectorChecker.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (c) 2011, Code Aurora Forum. All rights reserved.
  * Copyright (C) Research In Motion Limited 2011. All rights reserved.
@@ skipping 190 matching lines @@
         return element.hasClass() && element.classNames().contains(selector.value());
     case CSSSelector::Id:
         return element.hasID() && element.idForStyleResolution() == selector.value();
     case CSSSelector::Exact:
     case CSSSelector::Set:
     case CSSSelector::Hyphen:
     case CSSSelector::List:
     case CSSSelector::Contain:
     case CSSSelector::Begin:
     case CSSSelector::End:
-        return anyAttributeMatches(element, selector.match(), selector);
+        if (anyAttributeMatches(element, selector.match(), selector)) {
+            if (m_mode == ResolvingStyle && context.elementStyle)
+                context.elementStyle->setUnique();
+        }
+        return false;
     case CSSSelector::PseudoClass:
         return checkPseudoClass(context);
     // FIXME(sky): Remove pseudo elements completely.
     case CSSSelector::PseudoElement:
     case CSSSelector::Unknown:
         return false;
     }
     ASSERT_NOT_REACHED();
     return false;
 }
@@ skipping 84 matching lines @@
         return false;
     LocalFrame* frame = element.document().frame();
     if (!frame)
         return false;
     if (!frame->selection().isFocusedAndActive())
         return false;
     return true;
 }
 
 }