Implement a part of ProcessingInstruction by using PrivateScript

LayoutTests/platform/linux/fast/xsl/xslt-extra-content-at-end-expected.txt

Index: LayoutTests/platform/linux/fast/xsl/xslt-extra-content-at-end-expected.txt
diff --git a/LayoutTests/platform/linux/fast/xsl/xslt-extra-content-at-end-expected.txt b/LayoutTests/platform/linux/fast/xsl/xslt-extra-content-at-end-expected.txt
index 64a7ad033a6fe032d0b0c0fafec9468c753d870e..e42bce9761d2ddadeffe32e70863502ef7f775c3 100644
--- a/LayoutTests/platform/linux/fast/xsl/xslt-extra-content-at-end-expected.txt
+++ b/LayoutTests/platform/linux/fast/xsl/xslt-extra-content-at-end-expected.txt
@@ -1,23 +1,26 @@
 layer at (0,0) size 800x600
   RenderView at (0,0) size 800x600
-layer at (0,0) size 800x264
-  RenderBlock {html} at (0,0) size 800x263.88
-    RenderBlock {parsererror} at (16,16) size 768x195.88 [bgcolor=#FFDDDD] [border: (2px solid #CC7777)]
-      RenderBlock {h3} at (18,20.72) size 732x23
-        RenderText {#text} at (0,0) size 324x22
-          text run at (0,0) width 324: "This page contains the following errors:"
-      RenderBlock {div} at (18,62.44) size 732x15
-        RenderText {#text} at (0,0) size 490x15
-          text run at (0,0) width 490: "error on line 1 at column 76: Extra content at the end of the document"
-          text run at (490,0) width 0: " "
-      RenderBlock {h3} at (18,96.16) size 732x23
-        RenderText {#text} at (0,0) size 430x22
-          text run at (0,0) width 430: "Below is a rendering of the page up to the first error."
-      RenderBlock {p} at (18,137.88) size 732x40
-        RenderText {#text} at (0,0) size 692x39
-          text run at (0,0) width 692: "This document was created as the result of an XSL transformation. The line and column numbers given are from the"
-          text run at (0,20) width 112: "transformed result."
-    RenderBody {body} at (8,227.88) size 784x20
-      RenderBlock {p} at (0,0) size 784x20
-        RenderText {#text} at (0,0) size 218x19
-          text run at (0,0) width 218: "You should see error text above this"
+layer at (0,0) size 800x175
+  RenderBlock {HTML} at (0,0) size 800x175
+    RenderBody {BODY} at (8,8) size 784x159
+layer at (8,8) size 304x154
+  RenderPartObject {IFRAME} at (0,0) size 304x154 [border: (2px inset #EEEEEE)]
+    layer at (0,0) size 524x208
+      RenderView at (0,0) size 285x135
+    layer at (0,0) size 285x208
+      RenderBlock {html} at (0,0) size 285x207.88
+        RenderBlock {parsererror} at (16,16) size 253x139.88 [bgcolor=#FFDDDD] [border: (2px solid #CC7777)]
+          RenderBlock {h3} at (18,20.72) size 217x23
+            RenderText {#text} at (0,0) size 324x22
+              text run at (0,0) width 324: "This page contains the following errors:"
+          RenderBlock {div} at (18,62.44) size 217x15
+            RenderText {#text} at (0,0) size 490x15
+              text run at (0,0) width 490: "error on line 1 at column 76: Extra content at the end of the document"
+              text run at (490,0) width 0: " "
+          RenderBlock {h3} at (18,96.16) size 217x23
+            RenderText {#text} at (0,0) size 430x22
+              text run at (0,0) width 430: "Below is a rendering of the page up to the first error."
+        RenderBody {body} at (8,171.88) size 269x20
+          RenderBlock {p} at (0,0) size 269x20
+            RenderText {#text} at (0,0) size 218x19
+              text run at (0,0) width 218: "You should see error text above this"