Remove CSS_SHADERS compile-time flag.

Source/WebCore/css/WebKitCSSShaderValue.h

 /*
  * Copyright (C) 2011 Adobe Systems Incorporated. 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.
@@ skipping 12 matching lines @@
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
  * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
  * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  */
 
 #ifndef WebKitCSSShaderValue_h
 #define WebKitCSSShaderValue_h
 
-#if ENABLE(CSS_SHADERS)
-
 #include "CSSValue.h"
 
 namespace WebCore {
 
 class CachedResourceLoader;
 class KURL;
 class StyleCachedShader;
 class StyleShader;
 
 class WebKitCSSShaderValue : public CSSValue {
@@ skipping 26 matching lines @@
 // This will catch anyone doing an unnecessary cast.
 WebKitCSSShaderValue* toWebKitCSSShaderValue(const WebKitCSSShaderValue*);
 
 inline WebKitCSSShaderValue* toWebKitCSSShaderValue(CSSValue* value)
 {
     return value->isWebKitCSSShaderValue() ? static_cast<WebKitCSSShaderValue*>(value) : 0;
 }
 
 } // namespace WebCore
 
-#endif // ENABLE(CSS_SHADERS)
 
 #endif // WebKitCSSShaderValue_h