Change SVG layout tree output to be more meaningful and consistent

third_party/WebKit/LayoutTests/platform/linux/svg/custom/invalid-css-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 510x224
+  LayoutSVGRoot {svg} at (0,0) size 800x600
     LayoutSVGHiddenContainer {defs} at (0,0) size 0x0
       LayoutSVGResourceClipper {clipPath} [id="clip1"] [clipPathUnits=userSpaceOnUse]
-        LayoutSVGEllipse {circle} at (33,50) size 34x34 [fill={[type=SOLID] [color=#000000]}] [cx=30.00] [cy=40.00] [r=10.00]
+        LayoutSVGEllipse {circle} at (20,30) size 20x20 [fill={[type=SOLID] [color=#000000]}] [cx=30.00] [cy=40.00] [r=10.00]
       LayoutSVGResourceLinearGradient {linearGradient} [id="grad"] [gradientUnits=objectBoundingBox] [start=(0,0)] [end=(1,0)]
         LayoutSVGGradientStop {stop} [offset=0.00] [color=#008000]
     LayoutSVGResourceFilter {filter} [id="blurxy"] [filterUnits=objectBoundingBox] [primitiveUnits=userSpaceOnUse]
       [feGaussianBlur stdDeviation="5.00, 1.00"]
         [SourceGraphic]
     LayoutSVGResourceMarker {marker} [id="marker1"] [markerUnits=strokeWidth] [ref at (5,5)] [angle=0.00]
-      LayoutSVGRect {rect} at (0,0) size 4x4 [fill={[type=SOLID] [color=#FF0000]}] [x=0.00] [y=0.00] [width=10.00] [height=10.00]
-    LayoutSVGText {text} at (0,-2) size 306x20 contains 1 chunk(s)
-      LayoutSVGInlineText {#text} at (0,0) size 306x19
+      LayoutSVGRect {rect} at (0,0) size 10x10 [fill={[type=SOLID] [color=#FF0000]}] [x=0.00] [y=0.00] [width=10.00] [height=10.00]
+    LayoutSVGText {text} at (0,-1.39) size 306x18.59 contains 1 chunk(s)
+      LayoutSVGInlineText {#text} at (0,-1.39) size 306x18.59
         chunk 1 text run 1 at (0.00,13.00) startOffset 0 endOffset 46 width 306.00: "The rect should be opaque green, black stroke,"
-    LayoutSVGText {text} at (0,18) size 173x20 contains 1 chunk(s)
-      LayoutSVGInlineText {#text} at (0,0) size 173x19
+    LayoutSVGText {text} at (0,18.61) size 172.80x18.59 contains 1 chunk(s)
+      LayoutSVGInlineText {#text} at (0,18.61) size 172.80x18.59
         chunk 1 text run 1 at (0.00,33.00) startOffset 0 endOffset 25 width 172.80: "no markers and no dashes."
-    LayoutSVGPath {path} at (49,65) size 86x86 [stroke={[type=SOLID] [color=#000000]}] [fill={[type=SOLID] [color=#008000]}] [data="M 30 40 L 80 40 L 80 90 L 30 90 Z"]
-    LayoutSVGEllipse {circle} at (265,65) size 70x70 [stroke={[type=SOLID] [color=#000000]}] [fill={[type=LINEAR-GRADIENT] [id="grad"]}] [cx=180.00] [cy=60.00] [r=20.00]
-    LayoutSVGText {text} at (0,95) size 290x20 contains 1 chunk(s)
-      LayoutSVGInlineText {#text} at (0,0) size 290x19
+    LayoutSVGPath {path} at (30,40) size 50x50 [stroke={[type=SOLID] [color=#000000]}] [fill={[type=SOLID] [color=#008000]}] [data="M 30 40 L 80 40 L 80 90 L 30 90 Z"]
+    LayoutSVGEllipse {circle} at (160,40) size 40x40 [stroke={[type=SOLID] [color=#000000]}] [fill={[type=LINEAR-GRADIENT] [id="grad"]}] [cx=180.00] [cy=60.00] [r=20.00]
+    LayoutSVGText {text} at (0,95.61) size 289.75x18.59 contains 1 chunk(s)
+      LayoutSVGInlineText {#text} at (0,95.61) size 289.75x18.59
         chunk 1 text run 1 at (0.00,110.00) startOffset 0 endOffset 45 width 289.76: "The circle should be opaque green, no filter,"
-    LayoutSVGText {text} at (0,115) size 109x20 contains 1 chunk(s)
-      LayoutSVGInlineText {#text} at (0,0) size 109x19
+    LayoutSVGText {text} at (0,115.61) size 108.91x18.59 contains 1 chunk(s)
+      LayoutSVGInlineText {#text} at (0,115.61) size 108.91x18.59
         chunk 1 text run 1 at (0.00,130.00) startOffset 0 endOffset 17 width 108.92: "green stop color."