Bring back fast/multicol/layers-split-across-columns-expected.html reftest.

LayoutTests/platform/mac/fast/multicol/layers-split-across-columns-expected.txt

Index: LayoutTests/platform/mac/fast/multicol/layers-split-across-columns-expected.txt
diff --git a/LayoutTests/platform/mac/fast/multicol/layers-split-across-columns-expected.txt b/LayoutTests/platform/mac/fast/multicol/layers-split-across-columns-expected.txt
deleted file mode 100644
index 650f023cd0bf77c86a8935e68ec3c907752ce461..0000000000000000000000000000000000000000
--- a/LayoutTests/platform/mac/fast/multicol/layers-split-across-columns-expected.txt
+++ /dev/null
@@ -1,65 +0,0 @@
-layer at (0,0) size 800x600
-  RenderView at (0,0) size 800x600
-layer at (0,0) size 800x8
-  RenderBlock {HTML} at (0,0) size 800x8
-    RenderBody {BODY} at (8,8) size 784x0
-layer at (10,10) size 120x176
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-  RenderBlock {DIV} at (0,16) size 120x160 [border: (5px solid #000000)]
-    RenderBlock {DIV} at (5,5) size 50x50 [bgcolor=#000000]
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-layer at (15,81) size 50x200
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-layer at (150,10) size 120x176
-  RenderBlock (positioned) {DIV} at (150,10) size 120x176
-    RenderBlock (anonymous) at (0,0) size 120x16
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-        text run at (0,0) width 79: "Transforms:"
-layer at (150,26) size 120x160
-  RenderBlock {DIV} at (0,16) size 120x160 [border: (5px solid #000000)]
-    RenderBlock {DIV} at (5,5) size 50x50 [bgcolor=#000000]
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-layer at (55,81) size 50x200
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-layer at (10,200) size 120x176
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