Change SVG layout tree output to be more meaningful and consistent

third_party/WebKit/LayoutTests/platform/linux/svg/text/text-selection-tselect-02-f-expected.txt

 layer at (0,0) size 800x600
   LayoutView at (0,0) size 800x600
 layer at (0,0) size 800x600
   LayoutSVGRoot {svg} at (0,0) size 800x600
-    LayoutSVGContainer {g} at (16,192) size 718x208
+    LayoutSVGContainer {g} at (10,115.61) size 430x124.39
       LayoutSVGHiddenContainer {defs} at (0,0) size 0x0
-      LayoutSVGContainer {g} at (16,192) size 718x208 [transform={m=((1.00,0.00)(0.00,1.00)) t=(0.00,60.00)}]
-        LayoutSVGText {text} at (10,55) size 179x20 contains 1 chunk(s)
-          LayoutSVGInlineText {#text} at (0,0) size 179x19
+      LayoutSVGContainer {g} at (10,55.61) size 430x124.39 [transform={m=((1.00,0.00)(0.00,1.00)) t=(0.00,60.00)}]
+        LayoutSVGText {text} at (10,55.61) size 178.19x18.59 contains 1 chunk(s)
+          LayoutSVGInlineText {#text} at (10,55.61) size 178.19x18.59
             chunk 1 text run 1 at (10.00,70.00) startOffset 0 endOffset 26 width 178.20: "StartIndex: 0. NumChars: 9"
-        LayoutSVGText {text} at (10,85) size 372x55 contains 1 chunk(s)
-          LayoutSVGInlineText {#text} at (0,0) size 372x54
+        LayoutSVGText {text} at (10,85.41) size 371.39x54 contains 1 chunk(s)
+          LayoutSVGInlineText {#text} at (10,85.41) size 371.39x54
             chunk 1 text run 1 at (10.00,128.00) startOffset 0 endOffset 4 width 79.20: "abc "
             chunk 1 text run 1 at (89.20,128.00) startOffset 0 endOffset 4 width 68.40 RTL: " \x{5D3}\x{5D4}\x{5D5}"
             chunk 1 text run 1 at (157.60,128.00) startOffset 0 endOffset 3 width 72.00: "123"
             chunk 1 text run 1 at (229.60,128.00) startOffset 0 endOffset 4 width 73.20 RTL: "\x{5D0}\x{5D1}\x{5D2} "
             chunk 1 text run 1 at (302.80,128.00) startOffset 0 endOffset 4 width 73.80: " def"
-        LayoutSVGContainer {g} at (16,366) size 718x34
-          LayoutSVGRect {rect} at (16,366) size 168x34 [fill={[type=SOLID] [color=#0000FF]}] [x=10.00] [y=160.00] [width=100.00] [height=20.00]
-          LayoutSVGText {text} at (18,160) size 84x20 contains 1 chunk(s)
-            LayoutSVGInlineText {#text} at (0,0) size 83x19
+        LayoutSVGContainer {g} at (10,160) size 430x20
+          LayoutSVGRect {rect} at (10,160) size 100x20 [fill={[type=SOLID] [color=#0000FF]}] [x=10.00] [y=160.00] [width=100.00] [height=20.00]
+          LayoutSVGText {text} at (18.59,160.61) size 82.80x18.59 contains 1 chunk(s)
+            LayoutSVGInlineText {#text} at (18.59,160.61) size 82.80x18.59
               chunk 1 (middle anchor) text run 1 at (18.60,175.00) startOffset 0 endOffset 12 width 82.80: "startIndex++"
-          LayoutSVGRect {rect} at (200,366) size 167x34 [fill={[type=SOLID] [color=#0000FF]}] [x=120.00] [y=160.00] [width=100.00] [height=20.00]
-          LayoutSVGText {text} at (132,160) size 76x20 contains 1 chunk(s)
-            LayoutSVGInlineText {#text} at (0,0) size 76x19
+          LayoutSVGRect {rect} at (120,160) size 100x20 [fill={[type=SOLID] [color=#0000FF]}] [x=120.00] [y=160.00] [width=100.00] [height=20.00]
+          LayoutSVGText {text} at (132.19,160.61) size 75.59x18.59 contains 1 chunk(s)
+            LayoutSVGInlineText {#text} at (132.19,160.61) size 75.59x18.59
               chunk 1 (middle anchor) text run 1 at (132.20,175.00) startOffset 0 endOffset 12 width 75.60: "startIndex--"
-          LayoutSVGRect {rect} at (383,366) size 167x34 [fill={[type=SOLID] [color=#0000FF]}] [x=230.00] [y=160.00] [width=100.00] [height=20.00]
-          LayoutSVGText {text} at (237,160) size 86x20 contains 1 chunk(s)
-            LayoutSVGInlineText {#text} at (0,0) size 85x19
+          LayoutSVGRect {rect} at (230,160) size 100x20 [fill={[type=SOLID] [color=#0000FF]}] [x=230.00] [y=160.00] [width=100.00] [height=20.00]
+          LayoutSVGText {text} at (237.69,160.61) size 84.59x18.59 contains 1 chunk(s)
+            LayoutSVGInlineText {#text} at (237.69,160.61) size 84.59x18.59
               chunk 1 (middle anchor) text run 1 at (237.70,175.00) startOffset 0 endOffset 10 width 84.60: "numChars++"
-          LayoutSVGRect {rect} at (566,366) size 168x34 [fill={[type=SOLID] [color=#0000FF]}] [x=340.00] [y=160.00] [width=100.00] [height=20.00]
-          LayoutSVGText {text} at (351,160) size 78x20 contains 1 chunk(s)
-            LayoutSVGInlineText {#text} at (0,0) size 78x19
+          LayoutSVGRect {rect} at (340,160) size 100x20 [fill={[type=SOLID] [color=#0000FF]}] [x=340.00] [y=160.00] [width=100.00] [height=20.00]
+          LayoutSVGText {text} at (351.30,160.61) size 77.39x18.59 contains 1 chunk(s)
+            LayoutSVGInlineText {#text} at (351.30,160.61) size 77.39x18.59
               chunk 1 (middle anchor) text run 1 at (351.30,175.00) startOffset 0 endOffset 10 width 77.40: "numChars--"
-    LayoutSVGText {text} at (10,304) size 266x46 contains 1 chunk(s)
-      LayoutSVGInlineText {#text} at (0,0) size 266x46
+    LayoutSVGText {text} at (10,304) size 265.80x45.59 contains 1 chunk(s)
+      LayoutSVGInlineText {#text} at (10,304) size 265.80x45.59
         chunk 1 text run 1 at (10.00,340.00) startOffset 0 endOffset 16 width 265.80: "$Revision: 1.2 $"
-    LayoutSVGRect {rect} at (0,0) size 800x600 [stroke={[type=SOLID] [color=#000000]}] [x=1.00] [y=1.00] [width=478.00] [height=358.00]
+    LayoutSVGRect {rect} at (1,1) size 478x358 [stroke={[type=SOLID] [color=#000000]}] [x=1.00] [y=1.00] [width=478.00] [height=358.00]
 selection start: position 4 of child 0 {#text} of child 3 {text} of child 3 {g} of child 35 {g} of child 1 {svg} of document
 selection end:   position 13 of child 0 {#text} of child 3 {text} of child 3 {g} of child 35 {g} of child 1 {svg} of document