Android: How to access android.webkit.HTML5VideoViewProxy in Android API level 19+

Starting from API level 19, Android introduced a new version of WebView that is based on Chromium. in lower APIs I'm able to have access to android.webkit.HTML5VideoView and android.webkit.HTML5VideoViewProxy classes using reflection, but now Chromium (http://ift.tt/1PpsQV8) doesn't contain any of them and I get java.lang.ClassNotFoundException. Or maybe I don't understand this new WebView upgrade correctly, please help me to know whether it is possible to access the aforementioned classes in API 19+.

If it is not possible to access the classes in API 19+, then is it possible somehow integrate the necessary framework (e.g. http://ift.tt/1QzuW3F) to an android project in order to be able to use them? Great thanks in advance. Looking forward to your replies.