[Sanitizer API] Change test expectation for data-attribute-with-dashes test.

Bug: 1116418
Change-Id: Icecc7124ce0f8e448a5ae95037eb3a3adfe7af2c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2575296Reviewed-by: Yifan Luo <lyf@chromium.org>
Reviewed-by: Daniel Vogelheim <vogelheim@chromium.org>
Commit-Queue: Yifan Luo <lyf@chromium.org>
Cr-Commit-Position: refs/heads/master@{#833803}

third_party/blink/web_tests/wpt_internal/sanitizer-api/support/testcases.sub.js

@@ -29,7 +29,7 @@ const testcases = [
   {config_input: {dropAttributes: {}}, value: "<p id='test'>Click.</p>", result: "<p id=\"test\">Click.</p>", message: "empty dropAttributes list with id attribute"},
   {config_input: {dropAttributes: {"id": ["*"]}}, value: "<p id='test'>Click.</p>", result: "<p>Click.</p>", message: "dropAttributes list {\"id\": [\"*\"]} with id attribute"},
   {config_input: {dropAttributes: {"ID": ["*"]}}, value: "<p id='test'>Click.</p>", result: "<p>Click.</p>", message: "dropAttributes list {\"ID\": [\"*\"]} with id attribute"},
-  {config_input: {dropAttributes: {"data-attribute-with-dashes": ["*"]}}, value: "<p id='p' data-attribute-with-dashes='123'>Click.</p><script>document.getElementById('p').dataset.attributeWithDashes=123;</script>", result: "<p id=\"p\">Click.</p><script></script>", message: "dropAttributes list {\"data-attribute-with-dashes\": [\"*\"]} with dom dataset js access."},
+  {config_input: {dropAttributes: {"data-attribute-with-dashes": ["*"]}}, value: "<p id='p' data-attribute-with-dashes='123'>Click.</p><script>document.getElementById('p').dataset.attributeWithDashes=123;</script>", result: "<p id=\"p\">Click.</p>", message: "dropAttributes list {\"data-attribute-with-dashes\": [\"*\"]} with dom dataset js access."},
   {config_input: {allowAttributes: {"id": ["div"]}}, value: "<p id='p'>P</p><div id='div'>DIV</div>", result: "<p>P</p><div id=\"div\">DIV</div>", message: "allowAttributes list {\"id\": [\"div\"]} with id attribute"},
   {config_input: {allowAttributes: {"id": ["*"]}}, value: "<p id='test' onclick='a= 123'>Click.</p>", result: "<p id=\"test\">Click.</p>", message: "allowAttributes list {\"id\": [\"*\"]} with id attribute and onclick scripts"},
   {config_input: {allowAttributes: {"*": ["a"]}}, value: "<a id='a' style='color: black'>Click.</a><div style='color: white'>div</div>", result: "<a id=\"a\" style=\"color: black\">Click.</a><div>div</div>", message: "allowAttributes list {\"*\": [\"a\"]} with style attribute"},