Revert 115573 - Move Length and CSS length computation to float

LayoutTests/platform/mac/mathml/presentation/fractions-expected.txt

Index: LayoutTests/platform/mac/mathml/presentation/fractions-expected.txt
===================================================================
--- LayoutTests/platform/mac/mathml/presentation/fractions-expected.txt	(revision 115918)
+++ LayoutTests/platform/mac/mathml/presentation/fractions-expected.txt	(working copy)
@@ -95,14 +95,14 @@
       RenderBlock {p} at (0,236) size 784x34
         RenderText {#text} at (0,7) size 138x18
           text run at (0,7) width 138: "numerator alignment: "
-        RenderMathMLMath {math} at (138,0) size 90x34
-          RenderMathMLFraction {mfrac} at (1,0) size 88x34
-            RenderMathMLBlock {mfrac} at (0,0) size 88x16
+        RenderMathMLMath {math} at (138,0) size 89x34
+          RenderMathMLFraction {mfrac} at (1,0) size 87x34
+            RenderMathMLBlock {mfrac} at (0,0) size 87x16
               RenderInline {mi} at (0,0) size 7x16
                 RenderText {#text} at (3,0) size 7x16
                   text run at (3,0) width 7: "x"
-            RenderMathMLBlock {mfrac} at (0,16) size 88x18
-              RenderMathMLRow {mrow} at (5,2) size 80x16
+            RenderMathMLBlock {mfrac} at (0,16) size 87x18
+              RenderMathMLRow {mrow} at (4,2) size 80x16
                 RenderInline {mn} at (0,0) size 8x16
                   RenderText {#text} at (0,0) size 8x16
                     text run at (0,0) width 8: "1"
@@ -134,16 +134,16 @@
                 RenderInline {mn} at (0,0) size 8x16
                   RenderText {#text} at (72,0) size 8x16
                     text run at (72,0) width 8: "5"
-        RenderText {#text} at (228,7) size 4x18
-          text run at (228,7) width 4: " "
-        RenderMathMLMath {math} at (232,0) size 90x34
-          RenderMathMLFraction {mfrac} at (1,0) size 88x34
-            RenderMathMLBlock {mfrac} at (0,0) size 88x16
-              RenderInline {mi} at (0,0) size 8x16
-                RenderText {#text} at (40,0) size 8x16
-                  text run at (40,0) width 8: "x"
-            RenderMathMLBlock {mfrac} at (0,16) size 88x18
-              RenderMathMLRow {mrow} at (5,2) size 80x16
+        RenderText {#text} at (227,7) size 4x18
+          text run at (227,7) width 4: " "
+        RenderMathMLMath {math} at (231,0) size 89x34
+          RenderMathMLFraction {mfrac} at (1,0) size 87x34
+            RenderMathMLBlock {mfrac} at (0,0) size 87x16
+              RenderInline {mi} at (0,0) size 7x16
+                RenderText {#text} at (40,0) size 7x16
+                  text run at (40,0) width 7: "x"
+            RenderMathMLBlock {mfrac} at (0,16) size 87x18
+              RenderMathMLRow {mrow} at (4,2) size 80x16
                 RenderInline {mn} at (0,0) size 8x16
                   RenderText {#text} at (0,0) size 8x16
                     text run at (0,0) width 8: "1"
@@ -175,16 +175,16 @@
                 RenderInline {mn} at (0,0) size 8x16
                   RenderText {#text} at (72,0) size 8x16
                     text run at (72,0) width 8: "5"
-        RenderText {#text} at (322,7) size 4x18
-          text run at (322,7) width 4: " "
-        RenderMathMLMath {math} at (326,0) size 90x34
-          RenderMathMLFraction {mfrac} at (1,0) size 88x34
-            RenderMathMLBlock {mfrac} at (0,0) size 88x16
+        RenderText {#text} at (320,7) size 4x18
+          text run at (320,7) width 4: " "
+        RenderMathMLMath {math} at (324,0) size 89x34
+          RenderMathMLFraction {mfrac} at (1,0) size 87x34
+            RenderMathMLBlock {mfrac} at (0,0) size 87x16
               RenderInline {mi} at (0,0) size 7x16
-                RenderText {#text} at (78,0) size 7x16
-                  text run at (78,0) width 7: "x"
-            RenderMathMLBlock {mfrac} at (0,16) size 88x18
-              RenderMathMLRow {mrow} at (5,2) size 80x16
+                RenderText {#text} at (77,0) size 7x16
+                  text run at (77,0) width 7: "x"
+            RenderMathMLBlock {mfrac} at (0,16) size 87x18
+              RenderMathMLRow {mrow} at (4,2) size 80x16
                 RenderInline {mn} at (0,0) size 8x16
                   RenderText {#text} at (0,0) size 8x16
                     text run at (0,0) width 8: "1"