Limit optimized LayoutBlockFlowLine width computation to 8bit

third_party/WebKit/LayoutTests/platform/mac-retina/fast/text/drawBidiText-expected.txt

Index: third_party/WebKit/LayoutTests/platform/mac-retina/fast/text/drawBidiText-expected.txt
diff --git a/third_party/WebKit/LayoutTests/platform/mac-retina/fast/text/drawBidiText-expected.txt b/third_party/WebKit/LayoutTests/platform/mac-retina/fast/text/drawBidiText-expected.txt
new file mode 100644
index 0000000000000000000000000000000000000000..e91f5d38291d83624d36cb41cd17767cff2e5532
--- /dev/null
+++ b/third_party/WebKit/LayoutTests/platform/mac-retina/fast/text/drawBidiText-expected.txt
@@ -0,0 +1,56 @@
+layer at (0,0) size 800x600
+  LayoutView at (0,0) size 800x600
+layer at (0,0) size 800x600
+  LayoutBlockFlow {HTML} at (0,0) size 800x600
+    LayoutBlockFlow {BODY} at (8,8) size 784x584
+      LayoutBlockFlow {P} at (0,0) size 784x18
+        LayoutText {#text} at (0,0) size 285x18
+          text run at (0,0) width 285: "This tests GraphicsContext::drawBidiText()."
+layer at (8,42) size 345x227 clip at (9,43) size 332x225
+  LayoutListBox {SELECT} at (0,34) size 345.22x227 [bgcolor=#FFFFFF] [border: (1px solid #999999)]
+    LayoutBlockFlow {OPTION} at (1,1) size 332.22x22.59
+      LayoutText {#text} at (2,0) size 223x21
+        text run at (2,0) width 43: "First "
+        text run at (44,0) width 68 RTL: ") \x{5E8}\x{5D1}\x{5D9}\x{5E2}\x{5D9}\x{5EA}"
+        text run at (111,0) width 24: "03"
+        text run at (134,0) width 51 RTL: "\x{5E9}\x{5E0}\x{5D9}\x{5D4} ("
+        text run at (184,0) width 41: " fifth"
+    LayoutBlockFlow {OPTION} at (1,23.59) size 332.22x22.59
+      LayoutText {#text} at (108,0) size 223x21
+        text run at (108,0) width 35: "fifth"
+        text run at (142,0) width 73 RTL: ") \x{5E8}\x{5D1}\x{5D9}\x{5E2}\x{5D9}\x{5EA} "
+        text run at (214,0) width 24: "03"
+        text run at (237,0) width 56 RTL: " \x{5E9}\x{5E0}\x{5D9}\x{5D4} ("
+        text run at (292,0) width 39: "First"
+    LayoutBlockFlow {OPTION} at (1,46.19) size 332.22x22.59
+      LayoutText {#text} at (2,0) size 223x21
+        text run at (2,0) width 223 LTR override: "First \x{5E9}\x{5E0}\x{5D9}\x{5D4} (03) \x{5E8}\x{5D1}\x{5D9}\x{5E2}\x{5D9}\x{5EA} fifth"
+    LayoutBlockFlow {OPTION} at (1,68.78) size 332.22x22.59
+      LayoutText {#text} at (107,0) size 224x21
+        text run at (107,0) width 224 RTL override: "First \x{5E9}\x{5E0}\x{5D9}\x{5D4} (03) \x{5E8}\x{5D1}\x{5D9}\x{5E2}\x{5D9}\x{5EA} fifth"
+    LayoutBlockFlow {OPTION} at (1,91.38) size 332.22x22.59
+      LayoutText {#text} at (2,0) size 112x21
+        text run at (2,0) width 112 RTL: "\x{5DE}\x{5E9}\x{5D4}\x{5D5} \x{5E2}\x{5DD} \x{5E0}\x{5B4}\x{5E7}\x{5BC}\x{5D5}\x{5BC}\x{5D3}"
+    LayoutBlockFlow {OPTION} at (1,113.97) size 332.22x25
+      LayoutText {#text} at (2,0) size 74x21
+        text run at (2,0) width 74 RTL: "\x{627}\x{644}\x{644}\x{63A}\x{629} \x{627}\x{644}\x{639}\x{631}\x{628}\x{64A}\x{629}"
+    LayoutBlockFlow {OPTION} at (1,138.97) size 332.22x22.59
+      LayoutText {#text} at (2,0) size 130x21
+        text run at (2,0) width 130: "Et volia\x{300}: ATSUI!"
+    LayoutBlockFlow {OPTION} at (1,161.56) size 332.22x22.59
+      LayoutText {#text} at (2,0) size 302x21
+        text run at (2,0) width 97: "Directional "
+        text run at (98,0) width 80 RTL override: "\x{202E}overrides"
+        text run at (177,0) width 127: "\x{202C} are confusing."
+    LayoutBlockFlow {OPTION} at (1,184.16) size 332.22x22.59
+      LayoutText {#text} at (2,0) size 329x21
+        text run at (2,0) width 87: "She said \x{201C}"
+        text run at (88,0) width 76 RTL: " \x{5D1}\x{5DE}\x{5D6}\x{5D5}\x{5D5}\x{5D3}\x{5D4}!"
+        text run at (163,0) width 37: "TNT"
+        text run at (199,0) width 25 RTL: "\x{202B}\x{5D9}\x{5E9} "
+        text run at (223,0) width 108: "\x{202C}\x{201D} and ran off"
+layer at (8,269) size 377x18 clip at (9,270) size 364x16
+  LayoutListBox {SELECT} at (0,261) size 377.11x18 [bgcolor=#FFFFFF] [border: (1px solid #999999)]
+    LayoutBlockFlow {OPTION} at (1,1) size 364.11x16
+      LayoutText {#text} at (2,0) size 361x15
+        text run at (2,0) width 361: "There are two ways to measure text: my way and the wrong way"