Change SVG layout tree output to be more meaningful and consistent

third_party/WebKit/LayoutTests/platform/mac/svg/custom/text-filter-expected.txt

Index: third_party/WebKit/LayoutTests/platform/mac/svg/custom/text-filter-expected.txt
diff --git a/third_party/WebKit/LayoutTests/platform/mac/svg/custom/text-filter-expected.txt b/third_party/WebKit/LayoutTests/platform/mac/svg/custom/text-filter-expected.txt
index a851e50b0f48e19c9337db1623d42117e16696da..c809f8df8b352255db97dab9f140630d32aa3973 100644
--- a/third_party/WebKit/LayoutTests/platform/mac/svg/custom/text-filter-expected.txt
+++ b/third_party/WebKit/LayoutTests/platform/mac/svg/custom/text-filter-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 (0,4) size 621x77
+  LayoutSVGRoot {svg} at (0,0) size 800x600
     LayoutSVGHiddenContainer {defs} at (0,0) size 0x0
       LayoutSVGResourceFilter {filter} [id="myfilter"] [filterUnits=objectBoundingBox] [primitiveUnits=userSpaceOnUse]
         [feGaussianBlur stdDeviation="3.00, 3.00"]
           [SourceGraphic]
-    LayoutSVGText {text} at (4,11) size 561x63 contains 1 chunk(s)
+    LayoutSVGText {text} at (4,11) size 560.11x63 contains 1 chunk(s)
       [filter="myfilter"] LayoutSVGResourceFilter {filter} at (-52,4.70) size 672.13x75.60
-      LayoutSVGInlineText {#text} at (0,0) size 561x63
+      LayoutSVGInlineText {#text} at (4,11) size 560.11x63
         [filter="myfilter"] LayoutSVGResourceFilter {filter} at (-52,4.70) size 672.13x75.60
         chunk 1 text run 1 at (4.00,60.00) startOffset 0 endOffset 26 width 560.12: "This text should be blury."