Don't pixel snap for ellipsis

LayoutTests/platform/mac/fast/block/float/028-expected.txt

Index: LayoutTests/platform/mac/fast/block/float/028-expected.txt
diff --git a/LayoutTests/platform/mac/fast/block/float/028-expected.txt b/LayoutTests/platform/mac/fast/block/float/028-expected.txt
index daf6cfc388af0f41b30cf10050aa1f88b6f08517..121428941a4825e4d91e3c056a0a381ceeb783a7 100644
--- a/LayoutTests/platform/mac/fast/block/float/028-expected.txt
+++ b/LayoutTests/platform/mac/fast/block/float/028-expected.txt
@@ -44,8 +44,8 @@ layer at (8,208) size 569x55 clip at (25,210) size 550x36
       text run at (288,20) width 279: "needed to fit within the remaining line width"
 layer at (189,816) size 388x73 clip at (206,818) size 369x54
   RenderBlock {DIV} at (180.50,0) size 388.50x73 [border: (2px solid #0000FF)]
-    RenderText {#text} at (22,2) size 364x54
-      text run at (22,2) width 364: "This is an overflow:scroll region. It should sit on the same"
-      text run at (62,20) width 324: "line as the float and wrap as needed to fit within the"
-      text run at (252,38) width 4 RTL: "."
-      text run at (256,38) width 130: "remaining line width"
+    RenderText {#text} at (22,2) size 365x54
+      text run at (22,2) width 365: "This is an overflow:scroll region. It should sit on the same"
+      text run at (62,20) width 325: "line as the float and wrap as needed to fit within the"
+      text run at (252,38) width 5 RTL: "."
+      text run at (256,38) width 131: "remaining line width"