[CSS Regions] Rename region-overflow to region-fragment

Source/core/css/CSSComputedStyleDeclaration.cpp

Index: Source/core/css/CSSComputedStyleDeclaration.cpp
diff --git a/Source/core/css/CSSComputedStyleDeclaration.cpp b/Source/core/css/CSSComputedStyleDeclaration.cpp
index 48da4edd3b8cda17c355b68f0fba2eec4ef51f18..ee246c5bd0f2ed926f13b41c5fe58cf90d0ed5b1 100644
--- a/Source/core/css/CSSComputedStyleDeclaration.cpp
+++ b/Source/core/css/CSSComputedStyleDeclaration.cpp
@@ -331,10 +331,10 @@ static const CSSPropertyID staticComputableProperties[] = {
     CSSPropertyWebkitWritingMode,
     CSSPropertyWebkitFlowInto,
     CSSPropertyWebkitFlowFrom,
-    CSSPropertyWebkitRegionOverflow,
     CSSPropertyWebkitRegionBreakAfter,
     CSSPropertyWebkitRegionBreakBefore,
     CSSPropertyWebkitRegionBreakInside,
+    CSSPropertyWebkitRegionFragment,
     CSSPropertyWebkitAppRegion,
     CSSPropertyWebkitWrapFlow,
     CSSPropertyWebkitShapeMargin,
@@ -2574,8 +2574,8 @@ PassRefPtr<CSSValue> CSSComputedStyleDeclaration::getPropertyCSSValue(CSSPropert
             if (style->regionThread().isNull())
                 return cssValuePool().createIdentifierValue(CSSValueNone);
             return cssValuePool().createValue(style->regionThread(), CSSPrimitiveValue::CSS_STRING);
-        case CSSPropertyWebkitRegionOverflow:
-            return cssValuePool().createValue(style->regionOverflow());
+        case CSSPropertyWebkitRegionFragment:
+            return cssValuePool().createValue(style->regionFragment());
         case CSSPropertyWebkitWrapFlow:
             return cssValuePool().createValue(style->wrapFlow());
         case CSSPropertyWebkitShapeMargin: