The new functions draw the icon into another bitmap, combining it with the background color to determine the visibility of the resulting icon.

Bug: 805600
Change-Id: I592ed5342d6eb3bfb6c36a4da7148280ed2a0f85
Reviewed-on: https://chromium-review.googlesource.com/c/1297398
Commit-Queue: David Bertoni <dbertoni@chromium.org>
Reviewed-by: Devlin <rdevlin.cronin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#602523}