Change SVG layout tree output to be more meaningful and consistent

third_party/WebKit/LayoutTests/svg/custom/transformedMaskFails-expected.txt

Index: third_party/WebKit/LayoutTests/svg/custom/transformedMaskFails-expected.txt
diff --git a/third_party/WebKit/LayoutTests/svg/custom/transformedMaskFails-expected.txt b/third_party/WebKit/LayoutTests/svg/custom/transformedMaskFails-expected.txt
index 22d568a9ebf833bec0f0394aceca279c233ebfbc..688fd080b49170fb451a5a7b9d543be18f5d1dca 100644
--- a/third_party/WebKit/LayoutTests/svg/custom/transformedMaskFails-expected.txt
+++ b/third_party/WebKit/LayoutTests/svg/custom/transformedMaskFails-expected.txt
@@ -1,11 +1,11 @@
 layer at (0,0) size 800x600
   LayoutView at (0,0) size 800x600
 layer at (0,0) size 800x600
-  LayoutSVGRoot {svg} at (100,100) size 100x100
+  LayoutSVGRoot {svg} at (0,0) size 800x600
     LayoutSVGHiddenContainer {defs} at (0,0) size 0x0
       LayoutSVGResourceMasker {mask} [id="mask"] [maskUnits=objectBoundingBox] [maskContentUnits=userSpaceOnUse]
-        LayoutSVGContainer {g} at (100,100) size 150x150 [transform={m=((1.00,0.00)(0.00,1.00)) t=(100.00,100.00)}]
-          LayoutSVGRect {rect} at (100,100) size 150x150 [fill={[type=SOLID] [color=#FFFFFF]}] [x=0.00] [y=0.00] [width=150.00] [height=150.00]
+        LayoutSVGContainer {g} at (0,0) size 150x150 [transform={m=((1.00,0.00)(0.00,1.00)) t=(100.00,100.00)}]
+          LayoutSVGRect {rect} at (0,0) size 150x150 [fill={[type=SOLID] [color=#FFFFFF]}] [x=0.00] [y=0.00] [width=150.00] [height=150.00]
     LayoutSVGRect {rect} at (100,100) size 100x100 [fill={[type=SOLID] [color=#FF0000]}] [x=100.00] [y=100.00] [width=100.00] [height=100.00]
     LayoutSVGRect {rect} at (100,100) size 100x100 [fill={[type=SOLID] [color=#008000]}] [x=100.00] [y=100.00] [width=100.00] [height=100.00]
       [masker="mask"] LayoutSVGResourceMasker {mask} at (100,100) size 110x110