CameraPreviewSurfaceTexture: trivial text change

Signed-off-by: Wayne Wolf <wayne ron wu ## gmail>
CameraPreviewSurfaceTexture: directory name typo fix

Signed-off-by: Wayne Wolf <wayne ron wu ## gmail>
CameraPreviewSurfaceView: Camera using old style SurfaceView

Signed-off-by: Wayne Wolf <wayne ron wu ## gmail>