import android.os.storage.StorageEventListener;
                         ^
packages/apps/Usb/src/com/motorola/usb/UsbService.java:39: package android.os.storage does not exist
import android.os.storage.StorageManager;
                         ^
packages/apps/Usb/src/com/motorola/usb/UsbService.java:225: cannot find symbol
symbol  : class StorageManager
location: class com.motorola.usb.UsbService
    private StorageManager mStorageManager;
            ^
packages/apps/Usb/src/com/motorola/usb/UsbService.java:301: cannot find symbol
symbol  : class StorageEventListener
location: class com.motorola.usb.UsbService
    private StorageEventListener mStorageListener = new StorageEventListener() {