Remove CSS_SHADERS compile-time flag.

Source/WebCore/page/DOMWindow.idl

 /*
  * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2011 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 302 matching lines @@
 #if defined(LANGUAGE_JAVASCRIPT) && LANGUAGE_JAVASCRIPT
     // Global constructors
     attribute StyleSheetConstructor StyleSheet;
     attribute CSSStyleSheetConstructor CSSStyleSheet;
 
     attribute CSSValueConstructor CSSValue;
     attribute CSSPrimitiveValueConstructor CSSPrimitiveValue;
     attribute CSSValueListConstructor CSSValueList;
     attribute WebKitCSSTransformValueConstructor WebKitCSSTransformValue;
 
-#if defined(ENABLE_CSS_SHADERS) && ENABLE_CSS_SHADERS
     attribute WebKitCSSFilterRuleConstructor WebKitCSSFilterRule;
     attribute WebKitCSSMixFunctionValueConstructor WebKitCSSMixFunctionValue;
-#endif
 
 #if defined(ENABLE_CSS_FILTERS) && ENABLE_CSS_FILTERS
     attribute WebKitCSSFilterValueConstructor WebKitCSSFilterValue;
 #endif
 
 #if defined(ENABLE_CSS_DEVICE_ADAPTATION) && ENABLE_CSS_DEVICE_ADAPTATION
     attribute WebKitCSSViewportRuleConstructor WebKitCSSViewportRule;
 #endif
 
     attribute CSSRuleConstructor CSSRule;
@@ skipping 451 matching lines @@
     [EnabledAtRuntime=mediaSource] attribute SourceBufferListConstructor WebKitSourceBufferList;
 
 #endif // defined(LANGUAGE_JAVASCRIPT)
 
 #if defined(V8_BINDING) && V8_BINDING
     // window.toString() requires special handling in V8
     [DoNotCheckSignature, DoNotCheckSecurity, Custom, NotEnumerable] DOMString toString();
 #endif // defined(V8_BINDING)
 };