Change SVG layout tree output to be more meaningful and consistent

third_party/WebKit/LayoutTests/svg/filters/feImage-subregions-expected.txt

Index: third_party/WebKit/LayoutTests/svg/filters/feImage-subregions-expected.txt
diff --git a/third_party/WebKit/LayoutTests/svg/filters/feImage-subregions-expected.txt b/third_party/WebKit/LayoutTests/svg/filters/feImage-subregions-expected.txt
index 09ffb574647f5f609756bdb690396b53f39abc04..567b428b417d49398b33033ae840ca708e50b1f6 100644
--- a/third_party/WebKit/LayoutTests/svg/filters/feImage-subregions-expected.txt
+++ b/third_party/WebKit/LayoutTests/svg/filters/feImage-subregions-expected.txt
@@ -1,8 +1,8 @@
 layer at (0,0) size 800x600
   LayoutView at (0,0) size 800x600
 layer at (0,0) size 800x600
-  LayoutSVGRoot {svg} at (9,0) size 582x481
-    LayoutSVGHiddenContainer {defs} at (0,0) size 0x0
+  LayoutSVGRoot {svg} at (0,0) size 800x600
+    LayoutSVGHiddenContainer {defs} at (0,0) size 100x100
       LayoutSVGRect {rect} at (0,0) size 100x100 [fill={[type=SOLID] [color=#008000]}] [x=0.00] [y=0.00] [width=100.00] [height=100.00]
       LayoutSVGResourceFilter {filter} [id="filter1"] [filterUnits=objectBoundingBox] [primitiveUnits=userSpaceOnUse]
         [feImage image-size="100x100"]
@@ -12,19 +12,19 @@ layer at (0,0) size 800x600
         [feImage image-size="100x100"]
       LayoutSVGResourceFilter {filter} [id="filter4"] [filterUnits=objectBoundingBox] [primitiveUnits=userSpaceOnUse]
         [feImage image-size="100x100"]
-    LayoutSVGContainer {g} at (10,0) size 480x480 [transform={m=((1.00,0.00)(0.00,1.00)) t=(50.00,10.00)}]
-      LayoutSVGRect {rect} at (10,0) size 480x230 [fill={[type=SOLID] [color=#008000]}] [x=0.00] [y=0.00] [width=400.00] [height=200.00]
+    LayoutSVGContainer {g} at (0,0) size 400x450 [transform={m=((1.00,0.00)(0.00,1.00)) t=(50.00,10.00)}]
+      LayoutSVGRect {rect} at (0,0) size 400x200 [fill={[type=SOLID] [color=#008000]}] [x=0.00] [y=0.00] [width=400.00] [height=200.00]
         [filter="filter1"] LayoutSVGResourceFilter {filter} at (-40,-20) size 480x240
-      LayoutSVGContainer {g} at (10,240) size 480x240 [transform={m=((1.00,0.00)(0.00,1.00)) t=(0.00,250.00)}]
-        LayoutSVGRect {rect} at (10,240) size 480x240 [fill={[type=SOLID] [color=#008000]}] [x=0.00] [y=0.00] [width=400.00] [height=200.00]
+      LayoutSVGContainer {g} at (0,0) size 400x200 [transform={m=((1.00,0.00)(0.00,1.00)) t=(0.00,250.00)}]
+        LayoutSVGRect {rect} at (0,0) size 400x200 [fill={[type=SOLID] [color=#008000]}] [x=0.00] [y=0.00] [width=400.00] [height=200.00]
           [filter="filter2"] LayoutSVGResourceFilter {filter} at (-40,-20) size 480x240
-    LayoutSVGContainer {g} at (110,0) size 480x480 [transform={m=((1.00,0.00)(0.00,1.00)) t=(150.00,10.00)}]
-      LayoutSVGRect {rect} at (110,0) size 480x230 [fill={[type=SOLID] [color=#008000]}] [x=0.00] [y=0.00] [width=400.00] [height=200.00]
+    LayoutSVGContainer {g} at (0,0) size 400x450 [transform={m=((1.00,0.00)(0.00,1.00)) t=(150.00,10.00)}]
+      LayoutSVGRect {rect} at (0,0) size 400x200 [fill={[type=SOLID] [color=#008000]}] [x=0.00] [y=0.00] [width=400.00] [height=200.00]
         [filter="filter3"] LayoutSVGResourceFilter {filter} at (-40,-20) size 480x240
-      LayoutSVGContainer {g} at (110,240) size 480x240 [transform={m=((1.00,0.00)(0.00,1.00)) t=(0.00,250.00)}]
-        LayoutSVGRect {rect} at (110,240) size 480x240 [fill={[type=SOLID] [color=#008000]}] [x=0.00] [y=0.00] [width=400.00] [height=200.00]
+      LayoutSVGContainer {g} at (0,0) size 400x200 [transform={m=((1.00,0.00)(0.00,1.00)) t=(0.00,250.00)}]
+        LayoutSVGRect {rect} at (0,0) size 400x200 [fill={[type=SOLID] [color=#008000]}] [x=0.00] [y=0.00] [width=400.00] [height=200.00]
           [filter="filter4"] LayoutSVGResourceFilter {filter} at (-40,-20) size 480x240
-    LayoutSVGRect {rect} at (49,9) size 102x102 [stroke={[type=SOLID] [color=#FF0000]}] [x=50.00] [y=10.00] [width=100.00] [height=100.00]
-    LayoutSVGRect {rect} at (9,239) size 102x102 [stroke={[type=SOLID] [color=#FF0000]}] [x=10.00] [y=240.00] [width=100.00] [height=100.00]
-    LayoutSVGRect {rect} at (249,9) size 342x222 [stroke={[type=SOLID] [color=#FF0000]}] [x=250.00] [y=10.00] [width=340.00] [height=220.00]
-    LayoutSVGRect {rect} at (229,239) size 242x242 [stroke={[type=SOLID] [color=#FF0000]}] [x=230.00] [y=240.00] [width=240.00] [height=240.00]
+    LayoutSVGRect {rect} at (50,10) size 100x100 [stroke={[type=SOLID] [color=#FF0000]}] [x=50.00] [y=10.00] [width=100.00] [height=100.00]
+    LayoutSVGRect {rect} at (10,240) size 100x100 [stroke={[type=SOLID] [color=#FF0000]}] [x=10.00] [y=240.00] [width=100.00] [height=100.00]
+    LayoutSVGRect {rect} at (250,10) size 340x220 [stroke={[type=SOLID] [color=#FF0000]}] [x=250.00] [y=10.00] [width=340.00] [height=220.00]
+    LayoutSVGRect {rect} at (230,240) size 240x240 [stroke={[type=SOLID] [color=#FF0000]}] [x=230.00] [y=240.00] [width=240.00] [height=240.00]