Change SVG layout tree output to be more meaningful and consistent

third_party/WebKit/LayoutTests/platform/linux/svg/custom/object-sizing-explicit-width-height-expected.txt

Index: third_party/WebKit/LayoutTests/platform/linux/svg/custom/object-sizing-explicit-width-height-expected.txt
diff --git a/third_party/WebKit/LayoutTests/platform/linux/svg/custom/object-sizing-explicit-width-height-expected.txt b/third_party/WebKit/LayoutTests/platform/linux/svg/custom/object-sizing-explicit-width-height-expected.txt
index c616352230896a36136671ad9967de5e315c282a..c7b9fc6a2b15515f5464d9e52a30764bba06b97e 100644
--- a/third_party/WebKit/LayoutTests/platform/linux/svg/custom/object-sizing-explicit-width-height-expected.txt
+++ b/third_party/WebKit/LayoutTests/platform/linux/svg/custom/object-sizing-explicit-width-height-expected.txt
@@ -15,30 +15,30 @@ layer at (8,8) size 175x275
     layer at (0,0) size 175x275
       LayoutView at (0,0) size 175x275
     layer at (0,0) size 175x275
-      LayoutSVGRoot {svg} at (0,50) size 175x175
-        LayoutSVGRect {rect} at (0,50) size 175x175 [fill={[type=SOLID] [color=#0000FF]}] [x=0.00] [y=0.00] [width=300.00] [height=300.00]
-        LayoutSVGEllipse {circle} at (70,120) size 35x35 [fill={[type=SOLID] [color=#008000]}] [cx=150.00] [cy=150.00] [r=30.00]
+      LayoutSVGRoot {svg} at (0,0) size 175x275
+        LayoutSVGRect {rect} at (0,0) size 300x300 [fill={[type=SOLID] [color=#0000FF]}] [x=0.00] [y=0.00] [width=300.00] [height=300.00]
+        LayoutSVGEllipse {circle} at (120,120) size 60x60 [fill={[type=SOLID] [color=#008000]}] [cx=150.00] [cy=150.00] [r=30.00]
 layer at (187,8) size 175x275
   LayoutEmbeddedObject {object} at (179,0) size 175x275 [bgcolor=#FFA500]
     layer at (0,0) size 175x275
       LayoutView at (0,0) size 175x275
     layer at (0,0) size 175x275
-      LayoutSVGRoot {svg} at (0,50) size 175x175
-        LayoutSVGRect {rect} at (0,50) size 175x175 [fill={[type=SOLID] [color=#0000FF]}] [x=0.00] [y=0.00] [width=300.00] [height=300.00]
-        LayoutSVGEllipse {circle} at (70,120) size 35x35 [fill={[type=SOLID] [color=#008000]}] [cx=150.00] [cy=150.00] [r=30.00]
+      LayoutSVGRoot {svg} at (0,0) size 175x275
+        LayoutSVGRect {rect} at (0,0) size 300x300 [fill={[type=SOLID] [color=#0000FF]}] [x=0.00] [y=0.00] [width=300.00] [height=300.00]
+        LayoutSVGEllipse {circle} at (120,120) size 60x60 [fill={[type=SOLID] [color=#008000]}] [cx=150.00] [cy=150.00] [r=30.00]
 layer at (366,8) size 175x275
   LayoutEmbeddedObject {object} at (358,0) size 175x275 [bgcolor=#FFA500]
     layer at (0,0) size 175x275
       LayoutView at (0,0) size 175x275
     layer at (0,0) size 175x275
-      LayoutSVGRoot {svg} at (0,50) size 175x175
-        LayoutSVGRect {rect} at (0,50) size 175x175 [fill={[type=SOLID] [color=#0000FF]}] [x=0.00] [y=0.00] [width=300.00] [height=300.00]
-        LayoutSVGEllipse {circle} at (70,120) size 35x35 [fill={[type=SOLID] [color=#008000]}] [cx=150.00] [cy=150.00] [r=30.00]
+      LayoutSVGRoot {svg} at (0,0) size 175x275
+        LayoutSVGRect {rect} at (0,0) size 300x300 [fill={[type=SOLID] [color=#0000FF]}] [x=0.00] [y=0.00] [width=300.00] [height=300.00]
+        LayoutSVGEllipse {circle} at (120,120) size 60x60 [fill={[type=SOLID] [color=#008000]}] [cx=150.00] [cy=150.00] [r=30.00]
 layer at (545,8) size 175x275
   LayoutEmbeddedObject {object} at (537,0) size 175x275 [bgcolor=#FFA500]
     layer at (0,0) size 175x275
       LayoutView at (0,0) size 175x275
     layer at (0,0) size 175x275
-      LayoutSVGRoot {svg} at (0,50) size 175x175
-        LayoutSVGRect {rect} at (0,50) size 175x175 [fill={[type=SOLID] [color=#0000FF]}] [x=0.00] [y=0.00] [width=300.00] [height=300.00]
-        LayoutSVGEllipse {circle} at (70,120) size 35x35 [fill={[type=SOLID] [color=#008000]}] [cx=150.00] [cy=150.00] [r=30.00]
+      LayoutSVGRoot {svg} at (0,0) size 175x275
+        LayoutSVGRect {rect} at (0,0) size 300x300 [fill={[type=SOLID] [color=#0000FF]}] [x=0.00] [y=0.00] [width=300.00] [height=300.00]
+        LayoutSVGEllipse {circle} at (120,120) size 60x60 [fill={[type=SOLID] [color=#008000]}] [cx=150.00] [cy=150.00] [r=30.00]