Merge "Partial cp of "Prepare role code for modularization."" am: a81f292a

import static java.lang.annotation.ElementType.TYPE;

import static java.lang.annotation.RetentionPolicy.SOURCE;

import android.os.Looper;

import java.lang.annotation.Retention;

import java.lang.annotation.Target;

 * </code>

 * </pre>

 *

 * @memberDoc This method must be called from the

 *            {@linkplain Looper#getMainLooper() main thread} of your app.

 * @memberDoc This method must be called from the main thread of your app.

 * @hide

 */

@Retention(SOURCE)