> Using a single linearLayout instead of multiple nested views
> Using clipToOutline for rounded corners instead of using canvas.saveLayer
> Removing nested view elevations and overdraw
> Using LayoutTransition for animating layout changes, instead of manually creating animators
Change-Id: I8e57092f52ca5a032a2756594fdd39788acc5a0d
Added FolderAnimationManager, which manages the opening
and closing animations.
All of the animations are done in the Folder.
ie. When the users taps on the FolderIcon, we immediately hide the
FolderIcon and show the Folder inits place before starting the animation.
Bug: 35064148
Change-Id: Icacdbbf78a25489f2eab4fd352f2c6ed71eb710b
