Bug 251875

fast/dynamic/create-renderer-for-whitespace-only-text.html 

is a flaky failure on iOS. 

HISTORY:
https://results.webkit.org/?suite=layout-tests&test=fast%2Fdynamic%2Fcreate-renderer-for-whitespace-only-text.html

I attempted to replicate the failure as follows:

run-webkit-tests --iOS-simulator fast/dynamic/create-renderer-for-whitespace-only-text.html --iterations 100

TEXT DIFF TEXT:

@@ -23,10 +23,10 @@
       RenderBlock {P} at (0,92) size 784x20
         RenderText {#text} at (0,0) size 358x19
           text run at (0,0) width 358: "The left column should be identical to the right column."
-      RenderTable {TABLE} at (0,128) size 200x104 [border: (0.50px none #808080)]
-        RenderTableSection {TBODY} at (0,0) size 199x104
-          RenderTableRow {TR} at (0,0) size 199x29
-            RenderTableCell {TD} at (0,0) size 100x29 [border: (0.50px solid #000000)] [r=0 c=0 rs=1 cs=1]
+      RenderTable {TABLE} at (0,128) size 199x103 [border: (0.33px none #808080)]
+        RenderTableSection {TBODY} at (0,0) size 199x103
+          RenderTableRow {TR} at (0,0) size 198x29
+            RenderTableCell {TD} at (0,0) size 99x29 [border: (0.33px solid #000000)] [r=0 c=0 rs=1 cs=1]
               RenderBlock {DIV} at (4,4) size 91x21
                 RenderText {#text} at (0,0) size 24x19
                   text run at (0,0) width 24: "wet"
@@ -34,12 +34,12 @@
                   text run at (23,0) width 5: " "
                 RenderText {#text} at (27,0) size 24x19
                   text run at (27,0) width 24: "suit"
-            RenderTableCell {TD} at (99,0) size 100x29 [border: (0.50px solid #000000)] [r=0 c=1 rs=1 cs=1]
+            RenderTableCell {TD} at (98,0) size 100x29 [border: (0.33px solid #000000)] [r=0 c=1 rs=1 cs=1]
               RenderBlock {DIV} at (4,4) size 91x21
                 RenderText {#text} at (0,0) size 51x19
                   text run at (0,0) width 51: "wet suit"
-          RenderTableRow {TR} at (0,29) size 199x45
-            RenderTableCell {TD} at (0,29) size 100x45 [border: (0.50px solid #000000)] [r=1 c=0 rs=1 cs=1]
+          RenderTableRow {TR} at (0,28) size 198x46
+            RenderTableCell {TD} at (0,28) size 99x46 [border: (0.33px solid #000000)] [r=1 c=0 rs=1 cs=1]
               RenderBlock {UL} at (4,4) size 91x21
                 RenderInline {LI} at (0,0) size 24x19
                   RenderText {#text} at (40,0) size 24x19
@@ -50,7 +50,7 @@
                   RenderText {#text} at (67,0) size 24x19
                     text run at (67,0) width 24: "suit"
                 RenderText {#text} at (0,0) size 0x0
-            RenderTableCell {TD} at (99,29) size 100x45 [border: (0.50px solid #000000)] [r=1 c=1 rs=1 cs=1]
+            RenderTableCell {TD} at (98,28) size 100x46 [border: (0.33px solid #000000)] [r=1 c=1 rs=1 cs=1]
               RenderBlock {UL} at (4,4) size 91x21
                 RenderInline {LI} at (0,0) size 24x19
                   RenderText {#text} at (40,0) size 24x19
@@ -61,8 +61,8 @@
                   RenderText {#text} at (67,0) size 24x19
                     text run at (67,0) width 24: "suit"
                 RenderText {#text} at (0,0) size 0x0
-          RenderTableRow {TR} at (0,74) size 199x29
-            RenderTableCell {TD} at (0,74) size 100x29 [border: (0.50px solid #000000)] [r=2 c=0 rs=1 cs=1]
+          RenderTableRow {TR} at (0,73) size 198x29
+            RenderTableCell {TD} at (0,73) size 99x29 [border: (0.33px solid #000000)] [r=2 c=0 rs=1 cs=1]
               RenderBlock {DIV} at (4,4) size 91x21
                 RenderInline {DIV} at (0,0) size 24x19
                   RenderText {#text} at (0,0) size 24x19
@@ -73,7 +73,7 @@
                   RenderText {#text} at (27,0) size 24x19
                     text run at (27,0) width 24: "suit"
                 RenderText {#text} at (0,0) size 0x0
-            RenderTableCell {TD} at (99,74) size 100x29 [border: (0.50px solid #000000)] [r=2 c=1 rs=1 cs=1]
+            RenderTableCell {TD} at (98,73) size 100x29 [border: (0.33px solid #000000)] [r=2 c=1 rs=1 cs=1]
               RenderBlock {DIV} at (4,4) size 91x21
                 RenderInline {DIV} at (0,0) size 24x19
                   RenderText {#text} at (0,0) size 24x19