Change SVG layout tree output to be more meaningful and consistent

third_party/WebKit/LayoutTests/svg/custom/feDisplacementMap-01-expected.txt

Index: third_party/WebKit/LayoutTests/svg/custom/feDisplacementMap-01-expected.txt
diff --git a/third_party/WebKit/LayoutTests/svg/custom/feDisplacementMap-01-expected.txt b/third_party/WebKit/LayoutTests/svg/custom/feDisplacementMap-01-expected.txt
index b15e29cb8de700770105b86052bc289c2a873b1c..beb7a36c4a101e362549a27e2fc3f41f3d864957 100644
--- a/third_party/WebKit/LayoutTests/svg/custom/feDisplacementMap-01-expected.txt
+++ b/third_party/WebKit/LayoutTests/svg/custom/feDisplacementMap-01-expected.txt
@@ -1,13 +1,13 @@
 layer at (0,0) size 800x600
   LayoutView at (0,0) size 800x600
 layer at (0,0) size 800x600
-  LayoutSVGRoot {svg} at (0,0) size 110x110
-    LayoutSVGContainer {g} at (0,0) size 110x110
+  LayoutSVGRoot {svg} at (0,0) size 800x600
+    LayoutSVGContainer {g} at (0,0) size 100x100
       LayoutSVGHiddenContainer {defs} at (0,0) size 0x0
         LayoutSVGResourceFilter {filter} [id="ResultImage"] [filterUnits=objectBoundingBox] [primitiveUnits=userSpaceOnUse]
           [feDisplacementMap scale="100.00" xChannelSelector="RED" yChannelSelector="GREEN"]
             [feImage image-size="100x100"]
             [feImage image-size="100x100"]
-      LayoutSVGRect {rect} at (0,0) size 110x110 [fill={[type=SOLID] [color=#000000]}] [x=0.00] [y=0.00] [width=100.00] [height=100.00]
+      LayoutSVGRect {rect} at (0,0) size 100x100 [fill={[type=SOLID] [color=#000000]}] [x=0.00] [y=0.00] [width=100.00] [height=100.00]
         [filter="ResultImage"] LayoutSVGResourceFilter {filter} at (-10,-10) size 120x120
-      LayoutSVGRect {rect} at (0,0) size 101x101 [stroke={[type=SOLID] [color=#0000FF]}] [x=0.00] [y=0.00] [width=100.00] [height=100.00]
+      LayoutSVGRect {rect} at (0,0) size 100x100 [stroke={[type=SOLID] [color=#0000FF]}] [x=0.00] [y=0.00] [width=100.00] [height=100.00]