code: function()
      {
          if (!this._totalSize) {
              this._totalSize = this._isVertical ? this.contentElement.offsetWidth : this.contentElement.offsetHeight;
              this._totalSizeOtherDimension = this._isVertical ? this.contentElement.offsetHeight : this.contentElement.offsetWidth;
          }
          return this._totalSize * WebInspector.zoomManager.zoomFactor();
      }
docs: Returns total size in DIP.
  @return {number}