Change SVG layout tree output to be more meaningful and consistent

third_party/WebKit/LayoutTests/platform/linux/svg/text/small-fonts-2-expected.txt

 layer at (0,0) size 800x600
   LayoutView at (0,0) size 800x600
 layer at (0,0) size 800x600
-  LayoutSVGRoot {svg} at (160,0) size 490x530
-    LayoutSVGContainer {g} at (160,0) size 280x77 [transform={m=((0.10,0.00)(0.00,0.10)) t=(10.00,10.00)}]
-      LayoutSVGText {text} at (0,-109) size 467x136 contains 1 chunk(s)
-        LayoutSVGInlineText {#text} at (0,0) size 467x135
+  LayoutSVGRoot {svg} at (0,0) size 800x600
+    LayoutSVGContainer {g} at (0,-108.33) size 466.66x135 [transform={m=((0.10,0.00)(0.00,0.10)) t=(10.00,10.00)}]
+      LayoutSVGText {text} at (0,-108.33) size 466.66x135 contains 1 chunk(s)
+        LayoutSVGInlineText {#text} at (0,-108.33) size 466.66x135
           chunk 1 text run 1 at (0.00,0.00) startOffset 0 endOffset 9 width 466.67: "0,1,2,3,4"
-    LayoutSVGContainer {g} at (160,85) size 280x82 [transform={m=((1.00,0.00)(0.00,1.00)) t=(10.00,25.00)}]
-      LayoutSVGText {text} at (0,-11) size 47x14 contains 1 chunk(s)
-        LayoutSVGInlineText {#text} at (0,0) size 47x14
+    LayoutSVGContainer {g} at (0,-10.83) size 46.66x13.50 [transform={m=((1.00,0.00)(0.00,1.00)) t=(10.00,25.00)}]
+      LayoutSVGText {text} at (0,-10.83) size 46.66x13.50 contains 1 chunk(s)
+        LayoutSVGInlineText {#text} at (0,-10.83) size 46.66x13.50
           chunk 1 text run 1 at (0.00,0.00) startOffset 0 endOffset 9 width 46.67: "0,1,2,3,4"
-    LayoutSVGContainer {g} at (160,175) size 279x82 [transform={m=((12.00,0.00)(0.00,12.00)) t=(10.00,40.00)}]
-      LayoutSVGText {text} at (0,-1) size 4x2 contains 1 chunk(s)
-        LayoutSVGInlineText {#text} at (0,0) size 4x2
+    LayoutSVGContainer {g} at (0,-0.89) size 3.88x1.13 [transform={m=((12.00,0.00)(0.00,12.00)) t=(10.00,40.00)}]
+      LayoutSVGText {text} at (0,-0.89) size 3.88x1.13 contains 1 chunk(s)
+        LayoutSVGInlineText {#text} at (0,-0.89) size 3.88x1.13
           chunk 1 text run 1 at (0.00,0.00) startOffset 0 endOffset 9 width 3.89: "0,1,2,3,4"
-    LayoutSVGContainer {g} at (160,267) size 279x81 [transform={m=((24.00,0.00)(0.00,24.00)) t=(10.00,55.00)}]
-      LayoutSVGText {text} at (0,-1) size 2x2 contains 1 chunk(s)
-        LayoutSVGInlineText {#text} at (0,0) size 2x1
+    LayoutSVGContainer {g} at (0,-0.44) size 1.94x0.56 [transform={m=((24.00,0.00)(0.00,24.00)) t=(10.00,55.00)}]
+      LayoutSVGText {text} at (0,-0.44) size 1.94x0.56 contains 1 chunk(s)
+        LayoutSVGInlineText {#text} at (0,-0.44) size 1.94x0.56
           chunk 1 text run 1 at (0.00,0.00) startOffset 0 endOffset 9 width 1.94: "0,1,2,3,4"
-    LayoutSVGContainer {g} at (160,376) size 490x154 [transform={m=((0.30,0.00)(0.00,0.30)) t=(10.00,65.00)}]
-      LayoutSVGText {text} at (0,-8) size 273x86 contains 1 chunk(s)
+    LayoutSVGContainer {g} at (0,-7.77) size 272.20x85 [transform={m=((0.30,0.00)(0.00,0.30)) t=(10.00,65.00)}]
+      LayoutSVGText {text} at (0,-7.77) size 272.20x85 contains 1 chunk(s)
         LayoutSVGTSpan {tspan} at (0,0) size 223x10
-          LayoutSVGInlineText {#text} at (0,0) size 223x10
+          LayoutSVGInlineText {#text} at (0,-7.77) size 222.22x10
             chunk 1 text run 1 at (0.00,0.00) startOffset 0 endOffset 40 width 222.22: "For this test case to be successful, all"
-        LayoutSVGInlineText {#text} at (222,0) size 6x10
+        LayoutSVGInlineText {#text} at (222.22,-7.77) size 5.55x10
           chunk 1 text run 1 at (222.22,0.00) startOffset 0 endOffset 1 width 5.56: " "
         LayoutSVGTSpan {tspan} at (0,0) size 245x10
-          LayoutSVGInlineText {#text} at (0,15) size 245x10
+          LayoutSVGInlineText {#text} at (0,7.23) size 244.44x10
             chunk 1 text run 1 at (0.00,15.00) startOffset 0 endOffset 44 width 244.44: "lines of text must look the same. In Safari "
         LayoutSVGInlineText {#text} at (0,0) size 0x0
         LayoutSVGTSpan {tspan} at (0,0) size 262x10
-          LayoutSVGInlineText {#text} at (0,30) size 262x10
+          LayoutSVGInlineText {#text} at (0,22.23) size 261.11x10
             chunk 1 text run 1 at (0.00,30.00) startOffset 0 endOffset 47 width 261.11: "Beta 3, a text with a font size of 1 or smaller"
-        LayoutSVGInlineText {#text} at (261,30) size 6x10
+        LayoutSVGInlineText {#text} at (261.11,22.23) size 5.55x10
           chunk 1 text run 1 at (261.11,30.00) startOffset 0 endOffset 1 width 5.56: " "
         LayoutSVGTSpan {tspan} at (0,0) size 267x10
-          LayoutSVGInlineText {#text} at (0,45) size 267x10
+          LayoutSVGInlineText {#text} at (0,37.23) size 266.66x10
             chunk 1 text run 1 at (0.00,45.00) startOffset 0 endOffset 48 width 266.67: "is not painted correctly, even if the coordinate"
-        LayoutSVGInlineText {#text} at (266,45) size 6x10
+        LayoutSVGInlineText {#text} at (266.66,37.23) size 5.55x10
           chunk 1 text run 1 at (266.67,45.00) startOffset 0 endOffset 1 width 5.56: " "
         LayoutSVGTSpan {tspan} at (0,0) size 195x10
-          LayoutSVGInlineText {#text} at (0,60) size 195x10
+          LayoutSVGInlineText {#text} at (0,52.23) size 194.44x10
             chunk 1 text run 1 at (0.00,60.00) startOffset 0 endOffset 35 width 194.44: "transformations make it equivalent."
-        LayoutSVGInlineText {#text} at (194,60) size 6x10
+        LayoutSVGInlineText {#text} at (194.44,52.23) size 5.55x10
           chunk 1 text run 1 at (194.44,60.00) startOffset 0 endOffset 1 width 5.56: " "
         LayoutSVGTSpan {tspan} at (0,0) size 50x10
-          LayoutSVGInlineText {#text} at (0,75) size 50x10
+          LayoutSVGInlineText {#text} at (0,67.23) size 49.98x10
             chunk 1 text run 1 at (0.00,75.00) startOffset 0 endOffset 9 width 50.00: "Bug 14242"
         LayoutSVGInlineText {#text} at (0,0) size 0x0