Added crop rect to LayerDrawable to not crop TextureView.

Verified manually with ExoPlayer that TextureView isn't cropping.

Test: Did the manual test and
atest TextureViewCameraTest
atest TextureViewSnapshotTest
atest TextureViewStressTest
atest TextureViewTest
atest PixelCopyTest
atest BitmapTest
atest HardwareBitmapTests

and with HwAccelerationTest
Added crop test at ag/15430851

BUG=152621633

Change-Id: If1f448a94908cbf51272bc0d1bbbe1e113fd15f3