Switch spelling marker from '_' to '#' in spellcheck_test

third_party/WebKit/LayoutTests/editing/spelling/spellcheck_test.html

Index: third_party/WebKit/LayoutTests/editing/spelling/spellcheck_test.html
diff --git a/third_party/WebKit/LayoutTests/editing/spelling/spellcheck_test.html b/third_party/WebKit/LayoutTests/editing/spelling/spellcheck_test.html
index 033a821407301e1e473f434b882310abeebc541a..2cdebcf46ac047f77adb60cba633d1a8d49dc460 100644
--- a/third_party/WebKit/LayoutTests/editing/spelling/spellcheck_test.html
+++ b/third_party/WebKit/LayoutTests/editing/spelling/spellcheck_test.html
@@ -10,7 +10,7 @@
 spellcheck_test(
     '<div contenteditable>|</div>',
     'insertText zz.',
-    '<div contenteditable>_zz_.</div>',
+    '<div contenteditable>#zz#.</div>',
     'Mark misspellings after typing.');
 
 spellcheck_test(
@@ -23,7 +23,7 @@ spellcheck_test(
     '<div contenteditable>|</div>',
     'insertText orange,zz,apple.',
     // Grammar marker under the whole sentence, and spelling marker under 'zz'.
-    '<div contenteditable>~orange,_zz_,apple.~</div>',
+    '<div contenteditable>~orange,#zz#,apple.~</div>',
     'Mark overlapping grammer and spelling errors.');
 
 spellcheck_test(
@@ -32,7 +32,7 @@ spellcheck_test(
       document.querySelector('textarea').focus();
       document.execCommand('insertText', false, 'zz.');
     },
-    '<textarea>_zz_.</textarea>',
+    '<textarea>#zz#.</textarea>',
     'Mark misspellings in <textarea>.');
 
 spellcheck_test(
@@ -41,7 +41,7 @@ spellcheck_test(
       document.querySelector('input').focus();
       document.execCommand('insertText', false, 'asd.');
     },
-    '<input type="text" value="_asd_.">',
+    '<input type="text" value="#asd#.">',
     'Mark misspellings in <input>.');
 
 spellcheck_test(
@@ -58,7 +58,7 @@ spellcheck_test(
             // Trigger spellchecker by selection change.
             document.getSelection().collapse(div, 0);
           },
-          '<div contenteditable spellcheck="true">_zz_.</div>',
+          '<div contenteditable spellcheck="true">#zz#.</div>',
           'Marker appears after setting spellcheck=true.'
       )
     });