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

LayoutTests/platform/mac/virtual/mac-antialiasedtext/fast/text/word-break-run-rounding-expected.txt

Index: LayoutTests/platform/mac/virtual/mac-antialiasedtext/fast/text/word-break-run-rounding-expected.txt
diff --git a/LayoutTests/platform/mac/virtual/mac-antialiasedtext/fast/text/word-break-run-rounding-expected.txt b/LayoutTests/platform/mac/virtual/mac-antialiasedtext/fast/text/word-break-run-rounding-expected.txt
new file mode 100644
index 0000000000000000000000000000000000000000..7f51c216e9e5c026701635a391ec8a76a9e76323
--- /dev/null
+++ b/LayoutTests/platform/mac/virtual/mac-antialiasedtext/fast/text/word-break-run-rounding-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 {P} at (0,0) size 784x18
+        RenderText {#text} at (0,0) size 59x18
+          text run at (0,0) width 59: "Tests for "
+        RenderInline {I} at (0,0) size 705x18
+          RenderInline {A} at (0,0) size 301x18 [color=#0000EE]
+            RenderText {#text} at (59,0) size 301x18
+              text run at (59,0) width 301: "http://bugs.webkit.org/show_bug.cgi?id=13438"
+          RenderText {#text} at (360,0) size 404x18
+            text run at (360,0) width 4: " "
+            text run at (364,0) width 400: "Run rounding makes word-break:break-all/word not functional"
+        RenderText {#text} at (764,0) size 4x18
+          text run at (764,0) width 4: "."
+      RenderBlock {P} at (0,34) size 784x18
+        RenderText {#text} at (0,0) size 306x18
+          text run at (0,0) width 306: "Test that the preferred (maximum) width is right:"
+      RenderBlock (floating) {DIV} at (0,68) size 732.52x24 [border: (3px solid #000000)]
+        RenderText {#text} at (3,3) size 727x18
+          text run at (3,3) width 727: "The black border should fit tightly around this one line of text with no space after the period."
+      RenderBlock (anonymous) at (0,68) size 784x24
+        RenderBR {BR} at (732,0) size 1x18
+      RenderBlock {P} at (0,108) size 784x18
+        RenderText {#text} at (0,0) size 381x18
+          text run at (0,0) width 381: "Test that text does not wrap too early due to rounding errors:"
+      RenderBlock {DIV} at (0,142) size 431x24 [border: (3px solid #000000)]
+        RenderText {#text} at (3,3) size 422x18
+          text run at (3,3) width 422: "This text fits nicely on a single line of the given width."
+      RenderBlock {P} at (0,182) size 784x18
+        RenderText {#text} at (0,0) size 228x18
+          text run at (0,0) width 228: "Test that text does not wrap too late:"
+      RenderBlock {DIV} at (0,216) size 597x42 [border: (3px solid #000000)]
+        RenderText {#text} at (3,3) size 584x36
+          text run at (3,3) width 485: "J u s t a b u n c h o f l e t t e r s h e r e , n o t h i n g t o s e e . "
+          text run at (487,3) width 100: "Thisisonebig"
+          text run at (3,21) width 169: "wordwhichisverylong."