android: remove unused windowSizeChanged tracking

Change-Id: I0d451d9fea83d70e69d07059e55a5e6067c45711
android: use tile size and change the type to IntSize

Change-Id: Id19c3517fc6fb59307c81a0c1c8868e0d0c777b4
android: construct LayerView in xml GUI definition (activity_main)

Change-Id: I6cd3c8dff2ca36f3d64559b218d005d5a6da9066
android: TileIdentifier - contains tile position and zoom

Change-Id: Ia82dc1f99eff5117fe16df2b61c1a7230b52e07a
androdi: set TileProvider only when document is ready

Change-Id: Iada0e4513cc00248f45c97bfecbc91590e80a437
android: assure document close, introduce message box for errors

Change-Id: I4d5607d5568ebf73a61067975c21e740020cc8f7
android: use TextureView instead of SurfaceView for ICS+ devices

Change-Id: I4c5585d5eac4faf46ad9bed2d3992fe87b3d9a03
android: move getDrawable to LayerView (Fennec import)

Change-Id: Idd15003939574963f836bfab1e0c5385957ab18b
android: Better detection of HW accel. (needed by TextureView)

Change-Id: I32b091d13d9236cee654819e701c583041f869bb