Fill the fade-in ImageView with its content for the cross fade animation

The cross fade function of DragView tries to match the shapes of the fade-in and fade-out views. However, ImageView (the fade-in view) by default only tries to match at least one axis between the content (the final view) and the bound (the ImageView bounding box). We need to make sure that the content fully fills the bound to exactly match the shapes.

Test: Manual
Fix: 221496442
Change-Id: I7c142d52b7bfbd0e266a917c27cbd40691fbf3c2