Change SVG layout tree output to be more meaningful and consistent

third_party/WebKit/LayoutTests/platform/linux/svg/text/bbox-with-glyph-overflow-zoomed-expected.txt

 layer at (0,0) size 800x600
   LayoutView at (0,0) size 800x600
 layer at (0,0) size 800x251
   LayoutBlockFlow {HTML} at (0,0) size 800x250.78
     LayoutBlockFlow {BODY} at (14.39,14.39) size 771.22x222
       LayoutText {#text} at (0,0) size 478x33
         text run at (0,0) width 478: "No glyphs should extend outside the rects."
       LayoutBR {BR} at (478,0) size 0x33
-      LayoutSVGRoot {svg} at (45,63) size 178x128
-        LayoutSVGHiddenContainer {defs} at (0,0) size 0x0
-          LayoutSVGPath {path} at (14,48) size 1x1 [fill={[type=SOLID] [color=#000000]}] [data="M 20 20 L 200 20"]
-        LayoutSVGText {text} at (17,8) size 98x15 contains 1 chunk(s)
+      LayoutSVGRoot {svg} at (0,34) size 360x180
+        LayoutSVGHiddenContainer {defs} at (20,20) size 180x0
+          LayoutSVGPath {path} at (20,20) size 180x0 [fill={[type=SOLID] [color=#000000]}] [data="M 20 20 L 200 20"]
+        LayoutSVGText {text} at (17.77,8.89) size 97.22x13.88 contains 1 chunk(s)
           LayoutSVGTextPath {textPath} at (0,0) size 98x14
-            LayoutSVGInlineText {#text} at (0,0) size 98x14
+            LayoutSVGInlineText {#text} at (17.77,8.89) size 97.22x13.88
               chunk 1 text run 1 at (21.94,20.00) startOffset 0 endOffset 1 width 3.89: "f"
               chunk 1 text run 2 at (25.83,20.00) startOffset 1 endOffset 2 width 3.89: "f"
               chunk 1 text run 3 at (29.72,20.00) startOffset 2 endOffset 3 width 3.89: "f"
               chunk 1 text run 4 at (33.61,20.00) startOffset 3 endOffset 4 width 3.89: "f"
               chunk 1 text run 5 at (37.50,20.00) startOffset 4 endOffset 5 width 3.89: "f"
               chunk 1 text run 6 at (41.39,20.00) startOffset 5 endOffset 6 width 3.89: "f"
               chunk 1 text run 7 at (45.28,20.00) startOffset 6 endOffset 7 width 3.89: "f"
               chunk 1 text run 8 at (49.17,20.00) startOffset 7 endOffset 8 width 3.89: "f"
               chunk 1 text run 9 at (53.06,20.00) startOffset 8 endOffset 9 width 3.89: "f"
               chunk 1 text run 10 at (56.94,20.00) startOffset 9 endOffset 10 width 3.89: "f"
               chunk 1 text run 11 at (60.83,20.00) startOffset 10 endOffset 11 width 3.89: "f"
               chunk 1 text run 12 at (64.72,20.00) startOffset 11 endOffset 12 width 3.89: "f"
               chunk 1 text run 13 at (68.61,20.00) startOffset 12 endOffset 13 width 3.89: "f"
               chunk 1 text run 14 at (72.50,20.00) startOffset 13 endOffset 14 width 3.89: "f"
               chunk 1 text run 15 at (76.39,20.00) startOffset 14 endOffset 15 width 3.89: "f"
               chunk 1 text run 16 at (80.28,20.00) startOffset 15 endOffset 16 width 3.89: "f"
               chunk 1 text run 17 at (84.17,20.00) startOffset 16 endOffset 17 width 3.89: "f"
               chunk 1 text run 18 at (88.06,20.00) startOffset 17 endOffset 18 width 3.89: "f"
               chunk 1 text run 19 at (91.94,20.00) startOffset 18 endOffset 19 width 3.89: "f"
               chunk 1 text run 20 at (95.83,20.00) startOffset 19 endOffset 20 width 3.89: "f"
               chunk 1 text run 21 at (99.72,20.00) startOffset 20 endOffset 21 width 3.89: "f"
               chunk 1 text run 22 at (103.61,20.00) startOffset 21 endOffset 22 width 3.89: "f"
               chunk 1 text run 23 at (107.50,20.00) startOffset 22 endOffset 23 width 3.89: "f"
               chunk 1 text run 24 at (111.39,20.00) startOffset 23 endOffset 24 width 3.89: "f"
           LayoutSVGInlineText {#text} at (0,0) size 0x0
-        LayoutSVGText {text} at (17,28) size 72x28 contains 1 chunk(s)
-          LayoutSVGInlineText {#text} at (0,10) size 28x14
+        LayoutSVGText {text} at (17.77,28.34) size 70.55x27.22 contains 1 chunk(s)
+          LayoutSVGInlineText {#text} at (17.77,38.89) size 27.22x13.88
             chunk 1 text run 1 at (20.00,50.00) startOffset 0 endOffset 6 width 23.33: "ffffff"
           LayoutSVGTSpan {tspan} at (0,0) size 50x28
-            LayoutSVGInlineText {#text} at (21,0) size 49x28
+            LayoutSVGInlineText {#text} at (39.44,28.34) size 48.88x27.22
               chunk 1 text run 1 at (43.33,50.00) startOffset 0 endOffset 6 width 40.00: "ffffff"
-        LayoutSVGText {text} at (20,61) size 33x18 contains 1 chunk(s)
-          LayoutSVGInlineText {#text} at (0,0) size 33x17
+        LayoutSVGText {text} at (20,61.67) size 32.77x16.66 contains 1 chunk(s)
+          LayoutSVGInlineText {#text} at (20,61.67) size 32.77x16.66
             chunk 1 text run 1 at (20.00,75.00) startOffset 0 endOffset 5 width 31.67: "'faQ'"
-        LayoutSVGRect {rect} at (45,63) size 178x28 [stroke={[type=SOLID] [color=#008000]}] [fill={[type=SOLID] [color=#00000000]}] [x=17.77] [y=8.89] [width=97.22] [height=13.88]
-        LayoutSVGRect {rect} at (45,98) size 130x52 [stroke={[type=SOLID] [color=#008000]}] [fill={[type=SOLID] [color=#00000000]}] [x=17.77] [y=28.34] [width=70.55] [height=27.22]
-        LayoutSVGRect {rect} at (49,158) size 62x33 [stroke={[type=SOLID] [color=#008000]}] [fill={[type=SOLID] [color=#00000000]}] [x=20.00] [y=61.67] [width=32.77] [height=16.66]
+        LayoutSVGRect {rect} at (17.77,8.89) size 97.22x13.87 [stroke={[type=SOLID] [color=#008000]}] [fill={[type=SOLID] [color=#00000000]}] [x=17.77] [y=8.89] [width=97.22] [height=13.88]
+        LayoutSVGRect {rect} at (17.77,28.34) size 70.55x27.22 [stroke={[type=SOLID] [color=#008000]}] [fill={[type=SOLID] [color=#00000000]}] [x=17.77] [y=28.34] [width=70.55] [height=27.22]
+        LayoutSVGRect {rect} at (20,61.67) size 32.77x16.66 [stroke={[type=SOLID] [color=#008000]}] [fill={[type=SOLID] [color=#00000000]}] [x=20.00] [y=61.67] [width=32.77] [height=16.66]
       LayoutText {#text} at (0,0) size 0x0
       LayoutText {#text} at (0,0) size 0x0