Remember zoom overview state since the postscale callback is async.

        // scaleAll(), we need to post a Runnable to ensure requestLayout().

        // Additionally, only update the text wrap scale if the width changed.

        mWebView.post(new PostScale(w != ow &&

            !mWebView.getSettings().getUseFixedViewport()));

            !mWebView.getSettings().getUseFixedViewport(), mInZoomOverview));

    }

    private class PostScale implements Runnable {

        final boolean mUpdateTextWrap;

        // Remember the zoom overview state right after rotation since

        // it could be changed between the time this callback is initiated and

        // the time it's actually run.

        final boolean mInZoomOverviewBeforeSizeChange;

        public PostScale(boolean updateTextWrap) {

        public PostScale(boolean updateTextWrap, boolean inZoomOverview) {

            mUpdateTextWrap = updateTextWrap;

            mInZoomOverviewBeforeSizeChange = inZoomOverview;

        }

        public void run() {

                // still want to send the notification over to webkit.

                // Keep overview mode unchanged when rotating.

                final float zoomOverviewScale = getZoomOverviewScale();

                final float newScale = (mInZoomOverview) ?

                final float newScale = (mInZoomOverviewBeforeSizeChange) ?

                    zoomOverviewScale : Math.max(mActualScale, zoomOverviewScale); 

                setZoomScale(newScale, mUpdateTextWrap, true);

                // update the zoom buttons as the scale can be changed