B2G/gecko/toolkit/content/tests/fennec-tile-testapp/chrome/content/TileManager.js
/**
   * Hold a tile (i.e. mark it non-free).  Returns true if the operation
   * actually did something, false elsewise.
   */
Hold a tile .  Returns true if the operation
actually did something, false elsewise.
Hold a tile . Returns true if the operation actually did something false elsewise .
function holdTile(tile) {
    if (tile && tile.free) {
      tile._hold();
      this._numFree--;
      return true;
    }
    return false;
  }
function holdTile ( tile ) { if ( tile && tile . free ) { tile . _hold ( ) ; this . _numFree -- ; return true ; } return false ; }
Hold a tile (i.e.
Hold a tile ( i . e .