Make undoStack_ and redoStack_ protected
Make undoStack_ and redoStack_ protected
joshlory/blockly,google/blockly,rachel-fenichel/blockly,picklesrus/blockly,google/blockly,rachel-fenichel/blockly,jstnhuang/blockly,mark-friedman/blockly,google/blockly,twodee/blockly,rachel-fenichel/blockly,nickmain/blockly,nickmain/blockly,twodee/blockly,picklesrus/blockly,mark-friedman/blockly,picklesrus/blockly,google/blockly,joshlory/blockly,jstnhuang/blockly,mark-friedman/blockly,nickmain/blockly,rachel-fenichel/blockly,twodee/blockly,mark-friedman/blockly,twodee/blockly,rachel-fenichel/blockly,joshlory/blockly,mark-friedman/blockly,nickmain/blockly,twodee/blockly,trinketapp/blockly,google/blockly,trinketapp/blockly,trinketapp/blockly,jstnhuang/blockly,mark-friedman/blockly,rachel-fenichel/blockly,nickmain/blockly,nickmain/blockly,google/blockly,jstnhuang/blockly,twodee/blockly,trinketapp/blockly,rachel-fenichel/blockly,google/blockly