Undo of delete/forward-delete of text should not select the deleted text on non-mac platforms

LayoutTests/editing/undo/undo-forward-delete-expected.txt

Index: LayoutTests/editing/undo/undo-forward-delete-expected.txt
diff --git a/LayoutTests/editing/undo/undo-forward-delete-expected.txt b/LayoutTests/editing/undo/undo-forward-delete-expected.txt
index 42c1527cceb00ff5190a638912befb86cecb66d7..a695a17d3b995af77e119684f694da947f5bb4bb 100644
--- a/LayoutTests/editing/undo/undo-forward-delete-expected.txt
+++ b/LayoutTests/editing/undo/undo-forward-delete-expected.txt
@@ -1,27 +1,27 @@
 mac
-PASS selection.anchorNode.data is "This word should be selected."
+PASS selection.anchorNode.data is "This word should be selected only on mac."
 PASS selection.anchorOffset is 5
-PASS selection.focusNode.data is "This word should be selected."
+PASS selection.focusNode.data is "This word should be selected only on mac."
 PASS selection.focusOffset is 9
 PASS selection.toString() is "word"
 win
-PASS selection.anchorNode.data is "This word should be selected."
+PASS selection.anchorNode.data is "This word should be selected only on mac."
 PASS selection.anchorOffset is 5
-PASS selection.focusNode.data is "This word should be selected."
-PASS selection.focusOffset is 9
-PASS selection.toString() is "word"
+PASS selection.focusNode.data is "This word should be selected only on mac."
+PASS selection.focusOffset is 5
+PASS selection.toString() is ""
 unix
-PASS selection.anchorNode.data is "This word should be selected."
+PASS selection.anchorNode.data is "This word should be selected only on mac."
 PASS selection.anchorOffset is 5
-PASS selection.focusNode.data is "This word should be selected."
-PASS selection.focusOffset is 9
-PASS selection.toString() is "word"
+PASS selection.focusNode.data is "This word should be selected only on mac."
+PASS selection.focusOffset is 5
+PASS selection.toString() is ""
 android
-PASS selection.anchorNode.data is "This word should be selected."
+PASS selection.anchorNode.data is "This word should be selected only on mac."
 PASS selection.anchorOffset is 5
-PASS selection.focusNode.data is "This word should be selected."
-PASS selection.focusOffset is 9
-PASS selection.toString() is "word"
+PASS selection.focusNode.data is "This word should be selected only on mac."
+PASS selection.focusOffset is 5
+PASS selection.toString() is ""
 PASS successfullyParsed is true
 
 TEST COMPLETE