This also puts the Gecko-drawing of the checkbox / radio frames inside
nsGfxRadioControlFrame and nsGfxCheckboxControlFrame behind the
MOZ_WIDGET_ANDROID pragma for now.
MozReview-Commit-ID: BEyRfEmwjZY
--HG--
extra : rebase_source : fe42a65f55d822a2c7babd95898ec7520cc01616
extra : source : 9e2440ee6715204e88c7ae709a96ef7e1f707bdc