Create an antialiased virtual layout test group for font testing on Mac

LayoutTests/platform/mac/virtual/mac-antialiasedtext/fast/text/justify-ideograph-leading-expansion-expected.txt

Index: LayoutTests/platform/mac/virtual/mac-antialiasedtext/fast/text/justify-ideograph-leading-expansion-expected.txt
diff --git a/LayoutTests/platform/mac/virtual/mac-antialiasedtext/fast/text/justify-ideograph-leading-expansion-expected.txt b/LayoutTests/platform/mac/virtual/mac-antialiasedtext/fast/text/justify-ideograph-leading-expansion-expected.txt
new file mode 100644
index 0000000000000000000000000000000000000000..fa258487cd2b59a2213e273ba55ef3986bb63b3c
--- /dev/null
+++ b/LayoutTests/platform/mac/virtual/mac-antialiasedtext/fast/text/justify-ideograph-leading-expansion-expected.txt
@@ -0,0 +1,39 @@
+layer at (0,0) size 800x600
+  RenderView at (0,0) size 800x600
+layer at (0,0) size 800x600
+  RenderBlock {HTML} at (0,0) size 800x600
+    RenderBody {BODY} at (8,8) size 784x584
+      RenderBlock {DIV} at (0,0) size 784x154
+        RenderBlock {DIV} at (0,0) size 106x54 [border: (3px solid #000000)]
+          RenderText {#text} at (3,6) size 65x17
+            text run at (3,6) width 65: "a. b. "
+          RenderInline {SPAN} at (0,0) size 5x17
+            RenderText {#text} at (68,6) size 5x17
+              text run at (68,6) width 5: "i"
+          RenderText {#text} at (73,6) size 100x41
+            text run at (73,6) width 30: "\x{306F}"
+            text run at (3,30) width 63: "xxxxxxx"
+        RenderBlock {DIV} at (0,62) size 106x54 [border: (3px solid #000000)]
+          RenderText {#text} at (3,6) size 100x41
+            text run at (3,6) width 100: "a. b. i\x{306F}"
+            text run at (3,30) width 63: "xxxxxxx"
+        RenderBlock {DIV} at (0,124) size 106x30 [border: (3px solid #000000)]
+          RenderText {#text} at (3,6) size 237x17
+            text run at (3,6) width 237: "xxxxxxxxxxxxxxxxxxxxx\x{FF08}\x{624B}\x{FF09}"
+      RenderBlock {DIV} at (0,162) size 784x154
+        RenderBlock {DIV} at (0,0) size 106x54 [border: (3px solid #000000)]
+          RenderText {#text} at (3,6) size 65x17
+            text run at (3,6) width 65: "a. b. "
+          RenderInline {SPAN} at (0,0) size 5x17
+            RenderText {#text} at (68,6) size 5x17
+              text run at (68,6) width 5: "i"
+          RenderText {#text} at (73,6) size 100x41
+            text run at (73,6) width 30: "\x{306F}"
+            text run at (3,30) width 63: "xxxxxxx"
+        RenderBlock {DIV} at (0,62) size 106x54 [border: (3px solid #000000)]
+          RenderText {#text} at (3,6) size 100x41
+            text run at (3,6) width 100: "a. b. i\x{306F}"
+            text run at (3,30) width 63: "xxxxxxx"
+        RenderBlock {DIV} at (0,124) size 106x30 [border: (3px solid #000000)]
+          RenderText {#text} at (3,6) size 237x17
+            text run at (3,6) width 237: "xxxxxxxxxxxxxxxxxxxxx\x{FF08}\x{624B}\x{FF09}"