Change SVG layout tree output to be more meaningful and consistent

third_party/WebKit/LayoutTests/svg/text/small-fonts-expected.txt

Index: third_party/WebKit/LayoutTests/svg/text/small-fonts-expected.txt
diff --git a/third_party/WebKit/LayoutTests/svg/text/small-fonts-expected.txt b/third_party/WebKit/LayoutTests/svg/text/small-fonts-expected.txt
index 9ac848f021f831a163aa6b9db63c18421bb6ef54..43c7a75a6cf7372ebec01f417f58509f89cb570a 100644
--- a/third_party/WebKit/LayoutTests/svg/text/small-fonts-expected.txt
+++ b/third_party/WebKit/LayoutTests/svg/text/small-fonts-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 (170,174) size 427x25
-    LayoutSVGContainer {g} at (170,174) size 427x25 [transform={m=((1.00,0.00)(0.00,1.00)) t=(2.25,2.75)}]
-      LayoutSVGText {text} at (0,-1) size 7x2 contains 1 chunk(s)
-        LayoutSVGInlineText {#text} at (0,0) size 7x1
+  LayoutSVGRoot {svg} at (0,0) size 800x600
+    LayoutSVGContainer {g} at (0,-0.28) size 6.03x0.34 [transform={m=((1.00,0.00)(0.00,1.00)) t=(2.25,2.75)}]
+      LayoutSVGText {text} at (0,-0.28) size 6.03x0.34 contains 1 chunk(s)
+        LayoutSVGInlineText {#text} at (0,-0.28) size 6.03x0.34
           chunk 1 text run 1 at (0.00,0.00) startOffset 0 endOffset 45 width 6.05: "Passes if text is visible and not extra huge."