polyfill for cancelAnimationFrame is broken

[manolo]

The pachTimer for AnimationFrame prevents animation requests to be cancelled.

This code does not write anything in console normally, but when angular2-polyfills.js is loaded, the callback is executed:

  var callback = function() {
    console.log("Done")
  }
  var i = window.requestAnimationFrame(callback);
  window.cancelAnimationFrame(i);

[jwoyame]

Looking at this code in browser.ts:

patchTimer(_global, 'request', 'cancelMacroTask', 'AnimationFrame');
patchTimer(_global, 'mozRequest', 'mozCancel', 'AnimationFrame');
patchTimer(_global, 'webkitRequest', 'webkitCancel', 'AnimationFrame');

Shouldn't it be 'cancel' on the first line, instead of 'cancelMacroTask'? That 'MacroTask' string seems out of place.