Remove CSS_REGIONS compile flag from Blink.

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 2229e30023b603739ab8ab7f13ae202ff20c92fc..864f35498fdeaf6e43b74437ee072150dc0701c1 100644
--- a/Source/core/css/CSSComputedStyleDeclaration.cpp
+++ b/Source/core/css/CSSComputedStyleDeclaration.cpp
@@ -345,14 +345,12 @@ static const CSSPropertyID staticComputableProperties[] = {
     CSSPropertyWebkitUserModify,
     CSSPropertyWebkitUserSelect,
     CSSPropertyWebkitWritingMode,
-#if ENABLE(CSS_REGIONS)
     CSSPropertyWebkitFlowInto,
     CSSPropertyWebkitFlowFrom,
     CSSPropertyWebkitRegionOverflow,
     CSSPropertyWebkitRegionBreakAfter,
     CSSPropertyWebkitRegionBreakBefore,
     CSSPropertyWebkitRegionBreakInside,
-#endif
     CSSPropertyWebkitAppRegion,
 #if ENABLE(CSS_EXCLUSIONS)
     CSSPropertyWebkitWrapFlow,
@@ -1804,14 +1802,12 @@ PassRefPtr<CSSValue> CSSComputedStyleDeclaration::getPropertyCSSValue(CSSPropert
             return zoomAdjustedPixelValue(style->columnWidth(), style.get());
         case CSSPropertyTabSize:
             return cssValuePool().createValue(style->tabSize(), CSSPrimitiveValue::CSS_NUMBER);
-#if ENABLE(CSS_REGIONS)
         case CSSPropertyWebkitRegionBreakAfter:
             return cssValuePool().createValue(style->regionBreakAfter());
         case CSSPropertyWebkitRegionBreakBefore:
             return cssValuePool().createValue(style->regionBreakBefore());
         case CSSPropertyWebkitRegionBreakInside:
             return cssValuePool().createValue(style->regionBreakInside());
-#endif
         case CSSPropertyCursor: {
             RefPtr<CSSValueList> list;
             CursorList* cursors = style->cursors();
@@ -2561,7 +2557,6 @@ PassRefPtr<CSSValue> CSSComputedStyleDeclaration::getPropertyCSSValue(CSSPropert
 #endif
             }
             return cssValuePool().createIdentifierValue(CSSValueNone);
-#if ENABLE(CSS_REGIONS)
         case CSSPropertyWebkitFlowInto:
             if (style->flowThread().isNull())
                 return cssValuePool().createIdentifierValue(CSSValueNone);
@@ -2572,7 +2567,6 @@ PassRefPtr<CSSValue> CSSComputedStyleDeclaration::getPropertyCSSValue(CSSPropert
             return cssValuePool().createValue(style->regionThread(), CSSPrimitiveValue::CSS_STRING);
         case CSSPropertyWebkitRegionOverflow:
             return cssValuePool().createValue(style->regionOverflow());
-#endif
 #if ENABLE(CSS_EXCLUSIONS)
         case CSSPropertyWebkitWrapFlow:
             return cssValuePool().createValue(style->wrapFlow());