function drawFrameImage(x, width, height, image)
        {
            // Ignore draws deferred from a previous update call.
            if (this._lastDrawGeneration !== currentDrawGeneration)
                return;
            context.drawImage(image, x + 1, 4, width, height);
        }
@param {number} x
@param {number} width
@param {number} height
@param {!HTMLImageElement} image
@this {WebInspector.TimelineFilmStripOverview}