Remove workaround for multiple svg onload events

third_party/WebKit/LayoutTests/paint/invalidation/spv2/resources/paint-invalidation-test.js

 // Asynchronous tests should manually call finishPaintInvalidationTest at the appropriate time.
 window.testIsAsync = false;
 
 // All paint invalidation tests are asynchronous from test-runner's point of view.
 if (window.testRunner) {
     testRunner.waitUntilDone();
     if (document.location.hash == '#as-text')
         testRunner.dumpAsText();
 }
 
 function runPaintInvalidationTest()
 {
     if (!window.testRunner || !window.internals) {
         setTimeout(paintInvalidationTest, 500);
         return;
     }
 
-    // TODO(enne): this is a workaround for multiple svg onload events.
-    // See: http://crbug.com/372946
-    if (window.hasRunPaintInvalidationTest)
-        return;
-    window.hasRunPaintInvalidationTest = true;
-
     testRunner.layoutAndPaintAsyncThen(function()
     {
         window.internals.startTrackingPaintInvalidationObjects();
         paintInvalidationTest();
         if (!window.testIsAsync)
             finishPaintInvalidationTest();
     });
 }
 
 function removeAllChildren(element)
 {
     while (element.firstChild)
         element.removeChild(element.firstChild);
 }
 
 function finishPaintInvalidationTest()
 {
     if (!window.testRunner || !window.internals)
         return;
 
     testRunner.layoutAndPaintAsyncThen(function()
     {
         testRunner.setCustomTextOutput(JSON.stringify(internals.trackedPaintInvalidationObjects()).replace(/","/g, '",\n "'));
         testRunner.notifyDone();
     });
 }