Cleanup WebKit prefixed names for classes in css directory.

Source/core/css/resolver/StyleResolver.h

Index: Source/core/css/resolver/StyleResolver.h
diff --git a/Source/core/css/resolver/StyleResolver.h b/Source/core/css/resolver/StyleResolver.h
index f100ae2861e6112b39e0f05b2eb3b661381359f8..73ecfec42ebfe123d6b99069b22c340e1a34faed 100644
--- a/Source/core/css/resolver/StyleResolver.h
+++ b/Source/core/css/resolver/StyleResolver.h
@@ -24,6 +24,7 @@
 
 #include "RuntimeEnabledFeatures.h"
 #include "core/css/CSSRuleList.h"
+#include "core/css/CSSSVGDocumentValue.h"
 #include "core/css/CSSToStyleMap.h"
 #include "core/css/CSSValueList.h"
 #include "core/css/DocumentRuleSets.h"
@@ -34,7 +35,6 @@
 #include "core/css/SelectorChecker.h"
 #include "core/css/SelectorFilter.h"
 #include "core/css/SiblingTraversalStrategies.h"
-#include "core/css/WebKitCSSSVGDocumentValue.h"
 #include "core/css/resolver/ScopedStyleResolver.h"
 #include "core/css/resolver/StyleResolverState.h"
 #include "core/css/resolver/ViewportStyleResolver.h"
@@ -107,8 +107,6 @@ class StyleSheetList;
 class StyledElement;
 class ViewportStyleResolver;
 class WebKitCSSFilterValue;
-class WebKitCSSShaderValue;
-class WebKitCSSSVGDocumentValue;
 
 class MediaQueryResult {
     WTF_MAKE_NONCOPYABLE(MediaQueryResult); WTF_MAKE_FAST_ALLOCATED;