We have: * search_icon_active (i.e. this one is darker though - can use a filter) * search_icon_inactive * favicon_search * ic_widget_search * ab_search * suggestion_item_search And Anthony is giving me another one to add in bug 1166868. We should try scaling these (caveat being some of these may have whitespace in the drawables).

suggestion_item_search may be removed when bug 1158275 lands, which shouldn't be too far off.

In places where icons have whitespace in the drawables, consider using inset drawables to replace the whitespace.

I tinted search_icon_active successfully using DrawableCompat.setTint() in bug 1172071. Hopefully we can apply that all other occurrences of search_icon_inactive.

I'm writing a utility method in bug 1189585, `DrawableUtil.tintDrawable` to simplify this process.

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