Change SVG layout tree output to be more meaningful and consistent

third_party/WebKit/LayoutTests/platform/win7/svg/custom/text-match-highlight-expected.txt

 layer at (0,0) size 800x600
   LayoutView at (0,0) size 800x600
 layer at (0,0) size 800x410
   LayoutBlockFlow {HTML} at (0,0) size 800x410
     LayoutBlockFlow {BODY} at (8,8) size 784x394
       LayoutText {#text} at (0,0) size 457x17
         text run at (0,0) width 457: "Test for crbug.com/56580: There should be 9 highlighted instances of \""
       LayoutInline {SPAN} at (0,0) size 46x17
         LayoutText {#text} at (456,0) size 46x17
           text run at (456,0) width 46: "findme"
@@ skipping 20 matching lines @@
         text run at (315,54) width 48: " lorum."
       LayoutBR {BR} at (362,54) size 1x17
       LayoutText {#text} at (0,72) size 53x17
         text run at (0,72) width 53: "longtext"
       LayoutInline {SPAN} at (0,0) size 46x17
         LayoutText {#text} at (52,72) size 46x17
           text run at (52,72) width 46: "findme"
       LayoutText {#text} at (97,72) size 45x17
         text run at (97,72) width 45: "noyou."
       LayoutBR {BR} at (141,72) size 1x17
-      LayoutSVGRoot {svg} at (17,133) size 235x161
-        LayoutSVGHiddenContainer {defs} at (0,0) size 0x0
-          LayoutSVGPath {path} at (108,98) size 350x300 [fill={[type=SOLID] [color=#000000]}] [data="M 100 200 C 200 100 300 0 400 100 C 500 200 600 300 700 200 C 800 100 900 100 900 100"]
-        LayoutSVGText {text} at (10,36) size 233x17 contains 1 chunk(s)
-          LayoutSVGInlineText {#text} at (0,0) size 233x17
+      LayoutSVGRoot {svg} at (0,90) size 450x300
+        LayoutSVGHiddenContainer {defs} at (100,0) size 800x300
+          LayoutSVGPath {path} at (100,0) size 800x300 [fill={[type=SOLID] [color=#000000]}] [data="M 100 200 C 200 100 300 0 400 100 C 500 200 600 300 700 200 C 800 100 900 100 900 100"]
+        LayoutSVGText {text} at (10,36) size 232.84x17 contains 1 chunk(s)
+          LayoutSVGInlineText {#text} at (10,36) size 232.84x17
             chunk 1 text run 1 at (10.00,50.00) startOffset 0 endOffset 36 width 232.85: "Can you findme in this stroked text?"
         LayoutSVGText {text} at (10,91) size 138x12 contains 1 chunk(s)
-          LayoutSVGInlineText {#text} at (0,0) size 138x12
+          LayoutSVGInlineText {#text} at (10,91) size 138x12
             chunk 1 text run 1 at (10.00,100.00) startOffset 0 endOffset 23 width 138.00: "Findme in a typewriter!"
-        LayoutSVGContainer {g} at (28,222) size 202x72 [transform={m=((0.30,0.00)(0.00,0.30)) t=(0.00,120.00)}]
-          LayoutSVGText {text} at (69,14) size 669x239 contains 1 chunk(s)
+        LayoutSVGContainer {g} at (69.42,14.69) size 668.28x237.45 [transform={m=((0.30,0.00)(0.00,0.30)) t=(0.00,120.00)}]
+          LayoutSVGText {text} at (69.42,14.69) size 668.28x237.45 contains 1 chunk(s)
             LayoutSVGTextPath {textPath} at (0,0) size 669x238
-              LayoutSVGInlineText {#text} at (0,0) size 669x238
+              LayoutSVGInlineText {#text} at (69.42,14.69) size 668.28x237.45
                 chunk 1 text run 1 at (109.48,190.53) startOffset 0 endOffset 1 width 26.67: "F"
                 chunk 1 text run 2 at (122.51,177.58) startOffset 1 endOffset 2 width 10.00: "i"
                 chunk 1 text run 3 at (135.54,164.79) startOffset 2 endOffset 3 width 26.67: "n"
                 chunk 1 text run 4 at (154.83,146.39) startOffset 3 endOffset 4 width 26.67: "d"
                 chunk 1 text run 5 at (178.39,125.17) startOffset 4 endOffset 5 width 36.67: "m"
                 chunk 1 text run 6 at (202.97,105.11) startOffset 5 endOffset 6 width 26.67: "e"
                 chunk 1 text run 7 at (220.55,92.43) startOffset 6 endOffset 7 width 16.67: " "
                 chunk 1 text run 8 at (238.92,80.94) startOffset 7 endOffset 8 width 26.67: "o"
                 chunk 1 text run 9 at (262.81,69.16) startOffset 8 endOffset 9 width 26.67: "n"
                 chunk 1 text run 10 at (283.32,62.32) startOffset 9 endOffset 10 width 16.67: " "
@@ skipping 15 matching lines @@
                 chunk 1 text run 26 at (579.51,236.66) startOffset 25 endOffset 26 width 16.67: " "
                 chunk 1 text run 27 at (595.71,240.18) startOffset 26 endOffset 27 width 16.67: "f"
                 chunk 1 text run 28 at (608.98,241.37) startOffset 27 endOffset 28 width 10.00: "i"
                 chunk 1 text run 29 at (627.25,240.32) startOffset 28 endOffset 29 width 26.67: "n"
                 chunk 1 text run 30 at (652.87,233.10) startOffset 29 endOffset 30 width 26.67: "d"
                 chunk 1 text run 31 at (680.18,217.26) startOffset 30 endOffset 31 width 36.67: "m"
                 chunk 1 text run 32 at (703.94,196.11) startOffset 31 endOffset 32 width 26.67: "e"
                 chunk 1 text run 33 at (722.36,179.23) startOffset 32 endOffset 33 width 23.33: "?"
             LayoutSVGInlineText {#text} at (0,0) size 0x0
       LayoutText {#text} at (0,0) size 0x0