[TIMOB-18982] Android: Blob methods do not work

   var win = Titanium.UI.createWindow({
       backgroundColor:'#fff',
       layout: 'vertical'
   });
   win.open();
    
   var greenBox = Titanium.UI.createView({
     backgroundColor: '#0f0',
     top: 50,
     left: 50,
     height: 50,
     width: 50
   });
   win.add(greenBox);
    
   var blob = greenBox.toImage();
   var boxAsImage = Titanium.UI.createImageView({
     image: blob,
     top: 50,
     left: 50,
     height: 50,
     width: 50
   })
   win.add(boxAsImage);
    
   var cropped = blob.imageAsCropped({
     height: 10,
     width: 10,
     x: 10,
     y: 10
   });
   
   var logoimage = Titanium.UI.createImageView({
       image:cropped
   });
   win.add(logoimage);