Merge "Remove reduntant variable" am: 5241a207

    // Lock to synchronize between the UI thread and the thread that handles pixel copy results.

    // Only sync mWindow writes from UI thread with mWindow reads from sPixelCopyHandlerThread.

    private final Object mLock = new Object();

    // The lock used to synchronize the UI and render threads when a #dismiss is performed.

    private final Object mDestroyLock = new Object();

    /**

     * Initializes a magnifier.