No longer need to pass storage paths to WebRequestContext.cleanupPrivateBrowsingFiles()

     * browsing session and clears any internal state associated with that

     * session. The consequences of calling this method while a private

     * browsing session is active are unspecified.

     * @param context The same context which was used to create the private

     *                browsing WebView.

     * @return True if the private browsing files were successfully deleted,

     *         false otherwise.

     * @hide pending API council approval.

     */

    public static boolean cleanupPrivateBrowsingFiles(Context context) {

        // It seems wrong that we have to pass the storage locations here, given

        // that the storage files are created native-side in WebRequestContext

        // (albeit using a dumb getter on BrowserFrame to get the paths from

        // Java). It looks like this is required because we may need to call

        // this method before the BrowserFrame has been set up.

        // TODO: Investigate whether this can be avoided.

        return nativeCleanupPrivateBrowsingFiles(context.getDatabasePath("dummy").getParent(),

                                                 context.getCacheDir().getAbsolutePath());

    public static boolean cleanupPrivateBrowsingFiles() {

        return nativeCleanupPrivateBrowsingFiles();

    }

    private static native boolean nativeCleanupPrivateBrowsingFiles(String databaseDirectory,

                                                                    String cacheDirectory);

    private static native boolean nativeCleanupPrivateBrowsingFiles();

    private boolean extendScroll(int y) {

        int finalY = mScroller.getFinalY();