Mark children of an SVG root as needing paint invalidation checking on resize.

third_party/WebKit/LayoutTests/platform/linux/svg/zoom/page/zoom-foreignObject-expected.txt

Index: third_party/WebKit/LayoutTests/platform/linux/svg/zoom/page/zoom-foreignObject-expected.txt
diff --git a/third_party/WebKit/LayoutTests/platform/linux/svg/zoom/page/zoom-foreignObject-expected.txt b/third_party/WebKit/LayoutTests/platform/linux/svg/zoom/page/zoom-foreignObject-expected.txt
index 3354141caa7d956da2584ddd9638dccb9fa07411..93d86eef80d0bac00ecea48d9770b8292f13a2aa 100644
--- a/third_party/WebKit/LayoutTests/platform/linux/svg/zoom/page/zoom-foreignObject-expected.txt
+++ b/third_party/WebKit/LayoutTests/platform/linux/svg/zoom/page/zoom-foreignObject-expected.txt
@@ -17,11 +17,11 @@ layer at (0,0) size 800x600
     LayoutSVGRect {rect} at (0,0) size 361x289 [stroke={[type=SOLID] [color=#008000]}] [x=0.00] [y=0.00] [width=250.00] [height=200.00]
     LayoutSVGForeignObject {foreignObject} at (260,0) size 250x200
       LayoutSVGRoot {svg} at (374,7) size 361x281
-        LayoutSVGContainer {g} at (374,7) size 361x281 [transform={m=((3.00,0.26)(0.26,3.02)) t=(0.00,0.00)}]
+        LayoutSVGContainer {g} at (375,7) size 360x281 [transform={m=((3.00,0.26)(0.26,3.02)) t=(0.00,0.00)}]
           LayoutSVGText {text} at (0,1) size 81x19 contains 1 chunk(s)
             LayoutSVGInlineText {#text} at (0,0) size 81x19
               chunk 1 text run 1 at (0.00,16.00) startOffset 0 endOffset 14 width 80.06: "This is a text"
-          LayoutSVGContainer {a} at (381,89) size 288x106
+          LayoutSVGContainer {a} at (382,90) size 286x105
             LayoutSVGText {text} at (0,20) size 65x19 contains 1 chunk(s)
               LayoutSVGInlineText {#text} at (0,0) size 65x19
                 chunk 1 text run 1 at (0.00,35.00) startOffset 0 endOffset 11 width 64.51: "and a link."