Add web platform pointerevents tests to Layouttest

third_party/WebKit/LayoutTests/imported/wpt/resources/testharnessreport.js

 /*
  * THIS FILE INTENTIONALLY LEFT BLANK
  *
  * More specifically, this file is intended for vendors to implement
  * code needed to integrate testharness.js tests with their own test systems.
  *
  * Typically such integration will attach callbacks when each test is
  * has run, using add_result_callback(callback(test)), or when the whole test file has
  * completed, using add_completion_callback(callback(tests, harness_status)).
  *
@@ skipping 48 matching lines @@
     function isCSSWGTest() {
         var flags = document.querySelector('meta[name=flags]'),
             content = flags ? flags.getAttribute('content') : null;
         return content && content.match(/\bdom\b/);
     }
 
     function isJSTest() {
         return !!document.querySelector('script[src*="/resources/testharness"]');
     }
 
+    function injectSyntheticInput() {
+        var path = window.location.pathname;
+        if (path.match(/imported\/wpt\/.*\.html$/)) {
+            path = path.replace(/imported\/wpt\/(.*)\.html$/, "imported/wpt_automation/$1-input.js");
+            var input_script = document.createElement('script');
+            input_script.setAttribute('src', path);
+            document.head.appendChild(input_script);
+        }
+    }
+
     var didDispatchLoadEvent = false;
     var handleLoad = function() {
         didDispatchLoadEvent = true;
         window.removeEventListener('load', handleLoad);
+        // Add synthetic input to pointer event manual tests
+        if(window.location.pathname.includes('imported/wpt/pointerevents/')) {
+            setTimeout(injectSyntheticInput, 0);
+        }
     };
     window.addEventListener('load', handleLoad, false);
 
     // Using a callback function, test results will be added to the page in a
     // manner that allows dumpAsText to produce readable test results.
     add_completion_callback(function (tests, harness_status) {
 
         // Create element to hold results.
         var results = document.createElement("pre");
 
@@ skipping 49 matching lines @@
             // another completion callback might generate more results.  So, we
             // don't dump the results immediately.
             setTimeout(done, 0);
         } else {
             // Parsing the test HTML isn't finished yet.
             window.addEventListener('load', done);
         }
     });
 
 })();