[TIMOB-13407] Android: WebView 'swipe' event is not getting triggered

*Problem* The 'swipe' event for the WebView has been registered but when the swipe event is done, it is not getting triggered. If it is changed from WebView to Window, then the gesture is getting detected, but the same is not hapenning in WebView. *Steps to Reproduce* 1. Copy and paste code into app.js 2. try to swipe, notice no event triggered.

var currentWindow = Ti.UI.createWindow({
    exitOnClose : true
});
 
var webview = Ti.UI.createWebView({
    url : 'http://google.co.in'
});
 
webview.addEventListener('swipe',function(e) {
	alert('<<Swipe>>');
});
 
currentWindow.add(webview);
currentWindow.open();

Doc Supported: http://docs.appcelerator.com/titanium/latest/#!/api/Titanium.UI.WebView-event-swipe