Cleanup WebKit prefixed names for classes in css directory.

Source/core/css/InspectorCSSOMWrappers.cpp

Index: Source/core/css/InspectorCSSOMWrappers.cpp
diff --git a/Source/core/css/InspectorCSSOMWrappers.cpp b/Source/core/css/InspectorCSSOMWrappers.cpp
index 8877e00160515b8f7a4c5aad8b9fb099f718738f..a84449a2de45cfd76a6645a3d9f07dfff4fc3d31 100644
--- a/Source/core/css/InspectorCSSOMWrappers.cpp
+++ b/Source/core/css/InspectorCSSOMWrappers.cpp
@@ -33,12 +33,12 @@
 #include "core/css/CSSHostRule.h"
 #include "core/css/CSSImportRule.h"
 #include "core/css/CSSMediaRule.h"
+#include "core/css/CSSRegionRule.h"
 #include "core/css/CSSRule.h"
 #include "core/css/CSSStyleRule.h"
 #include "core/css/CSSStyleSheet.h"
 #include "core/css/CSSSupportsRule.h"
 #include "core/css/StyleSheetContents.h"
-#include "core/css/WebKitCSSRegionRule.h"
 #include "core/dom/DocumentStyleSheetCollection.h"
 
 #include <wtf/MemoryInstrumentationHashMap.h>
@@ -77,7 +77,7 @@ void InspectorCSSOMWrappers::collect(ListType* listType)
             collect(static_cast<CSSSupportsRule*>(cssRule));
             break;
         case CSSRule::WEBKIT_REGION_RULE:
-            collect(static_cast<WebKitCSSRegionRule*>(cssRule));
+            collect(static_cast<CSSRegionRule*>(cssRule));
             break;
         case CSSRule::HOST_RULE:
             collect(static_cast<CSSHostRule*>(cssRule));