AX: Don't use listIndex in AXListBoxOption class.
* AXListBoxOption::isSelectedOptionActive()
We don't need to compare indices. We can compare node pointers.
* AXListBoxOption::setSelected()
We don't need to compute an optionIndex. We can pass an HTMLOptionElement
pointer directly by changing the argument type of accessKeySetSelectedIndex().
This CL renames accessKeySetSelectedIndex() to selectOptionByAccessKey().
Now, we can remove AXListBoxOption::listBoxOptionIndex() and
HTMLSelectElement::listToOptionIndex().
Review-Url: https://codereview.chromium.org/2147963004
Cr-Commit-Position: refs/heads/master@{#405500}
5 files changed
