Remove -webkit-auto, -webkit-center, -webkit-left, -webkit-right.

sky/engine/core/rendering/RenderBlockLineLayout.cpp

Index: sky/engine/core/rendering/RenderBlockLineLayout.cpp
diff --git a/sky/engine/core/rendering/RenderBlockLineLayout.cpp b/sky/engine/core/rendering/RenderBlockLineLayout.cpp
index 59525d9c7d2bff90778cfd8eb8f3effd23b5dc42..4e572f7835430d312403ea3b99ec5b181d9ffe8f 100644
--- a/sky/engine/core/rendering/RenderBlockLineLayout.cpp
+++ b/sky/engine/core/rendering/RenderBlockLineLayout.cpp
@@ -466,15 +466,12 @@ void RenderBlockFlow::updateLogicalWidthForAlignment(const ETextAlign& textAlign
     // justifying text.
     switch (textAlign) {
     case LEFT:
-    case WEBKIT_LEFT:
         updateLogicalWidthForLeftAlignedBlock(style()->isLeftToRightDirection(), trailingSpaceRun, logicalLeft, totalLogicalWidth, availableLogicalWidth);
         break;
     case RIGHT:
-    case WEBKIT_RIGHT:
         updateLogicalWidthForRightAlignedBlock(style()->isLeftToRightDirection(), trailingSpaceRun, logicalLeft, totalLogicalWidth, availableLogicalWidth);
         break;
     case CENTER:
-    case WEBKIT_CENTER:
         updateLogicalWidthForCenterAlignedBlock(style()->isLeftToRightDirection(), trailingSpaceRun, logicalLeft, totalLogicalWidth, availableLogicalWidth);
         break;
     case JUSTIFY: