Fix failing WPTs introduced by https://crrev.com/c/5937916

There are few failures introduced by WPT import in the editing component
where the editing includes insertHTML command alongwith the white-space
CSS properties. This CL fixes the failing WPTs by setting the
expectation as per the CSS specification linked below.

This change only updates the expectation for the failing WPTs which were
introduced by this[1] CL and seem to have wrong expectations.

[1] https://crrev.com/c/5937916
[2] https://www.w3.org/TR/css-text-3/#white-space-property

Bug: 373924023
Change-Id: I31f2e63275e986c37cc423c5b0c878296d8ee5a6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5960541
Reviewed-by: Siye Liu <[email protected]>
Reviewed-by: Kent Tamura <[email protected]>
Commit-Queue: Utkarsh Pathak <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1391524}

Author: utpathak

editing/data/inserthtml.js

@@ -487,7 +487,7 @@ var browserTests = [
     {"inserthtml":[false,false,"",false,false,""]}],
 ["<p>{}<br></p>",
     [["inserthtml","<!--abc-->"]],
-    "<p><!--abc-->{}<br></p>",
+    "<p><!--abc-->{}</p>",
     [true],
     {"inserthtml":[false,false,"",false,false,""]}],
 ["<p><!--foo-->{}<span><br></span><!--bar--></p>",
@@ -521,7 +521,7 @@ var browserTests = [
     {"inserthtml":[false,false,"",false,false,""]}],
 ["<p><br>{}</p>",
     [["inserthtml","<!--abc-->"]],
-    "<p><!--abc--><br></p>",
+    "<p><!--abc--></p>",
     [true],
     {"inserthtml":[false,false,"",false,false,""]}],
 ["<p><!--foo--><span><br></span>{}<!--bar--></p>",
@@ -567,19 +567,21 @@ var browserTests = [
     {"inserthtml":[false,false,"",false,false,""]}],
 ["<pre contenteditable=\"false\"><span contenteditable>[1234]</span></pre>",
     [["inserthtml","<pre>abc</pre>"]],
-    "<pre contenteditable=\"false\"><span contenteditable=\"\">abc</span></pre>",
+    ["<pre contenteditable=\"false\"><span contenteditable=\"\">abc</span></pre>",
+     "<pre contenteditable=\"false\"><span contenteditable=\"\">abc</span></pre>"],
     [true],
     {"inserthtml":[false,false,"",false,false,""]}],
 
 // Empty inline elements shouldn't be deleted if they are inserted intentionally
 ["<div>a[]b</div>",
     [["inserthtml","<span></span>"]],
-    "<div>a<span></span>b</div>",
+    ["<div>a<span></span>b</div>","<div>a<span></span>b<br></div>"],
     [true],
     {"inserthtml":[false,false,"",false,false,""]}],
 ["<div>a[]c</div>",
     [["inserthtml","<span class=\"s1\"></span>b<span class=\"s2\"></span>"]],
-    "<div>a<span class=\"s1\"></span>b<span class=\"s2\"></span>c</div>",
+    ["<div>a<span class=\"s1\"></span>b<span class=\"s2\"></span>c</div>",
+     "<div>a<span class=\"s1\"></span>b<span class=\"s2\"></span>c<br></div>"],
     [true],
     {"inserthtml":[false,false,"",false,false,""]}],
 ["{}",