third_party/WebKit/Source/web/tests/data/ime-on-focus-on-user-gesture.html - chromium/src - Git at Google

 <!DOCTYPE html>
 <div id="button" style="width: 200px; height: 200px"></div>
 <input type="text" id="input"></input>
 <script>
 document.querySelector("#button").addEventListener("click", function() {
     document.querySelector("#input").focus();
 });
 </script>
	<!DOCTYPE html>
	<div id="button" style="width: 200px; height: 200px"></div>
	<input type="text" id="input"></input>
	<script>
	document.querySelector("#button").addEventListener("click", function() {
	document.querySelector("#input").focus();
	});
	</script>