Revert r174133, r178901 and r178981 to fix Mac

LayoutTests/platform/linux/fast/text/bidi-ignorable-unicode-expected.txt

Index: LayoutTests/platform/linux/fast/text/bidi-ignorable-unicode-expected.txt
diff --git a/LayoutTests/platform/linux/fast/text/bidi-ignorable-unicode-expected.txt b/LayoutTests/platform/linux/fast/text/bidi-ignorable-unicode-expected.txt
deleted file mode 100644
index e79c75be9be52e006747487a2758d91d4e359bf3..0000000000000000000000000000000000000000
--- a/LayoutTests/platform/linux/fast/text/bidi-ignorable-unicode-expected.txt
+++ /dev/null
@@ -1,19 +0,0 @@
-layer at (0,0) size 800x600
-  RenderView at (0,0) size 800x600
-layer at (0,0) size 800x132
-  RenderBlock {HTML} at (0,0) size 800x132.44
-    RenderBody {BODY} at (8,18.72) size 784x97.72
-      RenderBlock {H3} at (0,0) size 784x23
-        RenderText {#text} at (0,0) size 202x22
-          text run at (0,0) width 202: "Test for chromium bug : "
-        RenderInline {A} at (0,0) size 60x22 [color=#0000EE]
-          RenderText {#text} at (202,0) size 60x22
-            text run at (202,0) width 60: "256333"
-        RenderText {#text} at (262,0) size 292x22
-          text run at (262,0) width 292: ". Test case for Ignorable characters"
-      RenderBlock {P} at (0,41.72) size 784x20
-        RenderText {#text} at (0,0) size 145x19
-          text run at (0,0) width 145: "abc should be displayed"
-      RenderBlock {P} at (0,77.72) size 784x20
-        RenderText {#text} at (0,0) size 22x19
-          text run at (0,0) width 22: "a\x{2066}b\x{2069}c"