2 This tests the label of a file chooser button.
4 PASS The label of a single file chooser button is "Choose File".
5 PASS The label of a multiple file chooser button is "Choose Files".
6 PASS Initially, the label of a file chooser button is "Choose File".
7 PASS Set "multiple" attribute, then the label of the file chooser button becomes "Choose Files".
8 PASS Unset "multiple" attribute, then the label of the file chooser button becomes "Choose File".
9 PASS successfullyParsed is true