Remove CSS_SHADERS compile-time flag.

Source/WebCore/css/StyleRule.h

Index: Source/WebCore/css/StyleRule.h
diff --git a/Source/WebCore/css/StyleRule.h b/Source/WebCore/css/StyleRule.h
index 09e1ef1fd9fda402a32a197e1b94a5bfc320b94e..a253bea3763f3901f0349250e7ee5b987535bdea 100644
--- a/Source/WebCore/css/StyleRule.h
+++ b/Source/WebCore/css/StyleRule.h
@@ -53,9 +53,7 @@ public:
         Viewport = 15,
 #endif
         Region = 16,
-#if ENABLE(CSS_SHADERS)
         Filter = 17,
-#endif
 #if ENABLE(SHADOW_DOM)
         HostInternal = 18, // Spec says Host = 1001, but we can use only 5 bit for type().
 #endif
@@ -80,9 +78,7 @@ public:
 #if ENABLE(SHADOW_DOM)
     bool isHostRule() const { return type() == HostInternal; }
 #endif
-#if ENABLE(CSS_SHADERS)
     bool isFilterRule() const { return type() == Filter; }
-#endif
 
     PassRefPtr<StyleRuleBase> copy() const;
 
@@ -329,7 +325,6 @@ inline const StyleRuleRegion* toStyleRuleRegion(const StyleRuleGroup* rule)
     return static_cast<const StyleRuleRegion*>(rule);
 }
 
-#if ENABLE(CSS_SHADERS)
 class StyleRuleFilter : public StyleRuleBase {
 public:
     static PassRefPtr<StyleRuleFilter> create(const String& filterName) { return adoptRef(new StyleRuleFilter(filterName)); }
@@ -354,7 +349,6 @@ private:
     String m_filterName;
     RefPtr<StylePropertySet> m_properties;
 };
-#endif // ENABLE(CSS_SHADERS)
 
 } // namespace WebCore