Check if the browser's value was plausible, and use it if so.
Check if the browser's value was plausible, and use it if so.

jstnhuang/blockly,google/blockly,trinketapp/blockly,google/blockly,rachel-fenichel/blockly,google/blockly,jstnhuang/blockly,twodee/blockly,trinketapp/blockly,mark-friedman/blockly,rachel-fenichel/blockly,joshlory/blockly,trinketapp/blockly,nickmain/blockly,google/blockly,nickmain/blockly,nickmain/blockly,twodee/blockly,google/blockly,mark-friedman/blockly,rachel-fenichel/blockly,rachel-fenichel/blockly,joshlory/blockly,mark-friedman/blockly,trinketapp/blockly,rachel-fenichel/blockly,mark-friedman/blockly,mark-friedman/blockly,twodee/blockly,picklesrus/blockly,google/blockly,nickmain/blockly,mark-friedman/blockly,twodee/blockly,jstnhuang/blockly,joshlory/blockly,google/blockly,nickmain/blockly,nickmain/blockly,rachel-fenichel/blockly,jstnhuang/blockly,picklesrus/blockly,twodee/blockly,rachel-fenichel/blockly,twodee/blockly,picklesrus/blockly