Previously there were many PNGs for the cards in Payment Request. Now
this code uses the Autofill assets, which are vector drawables.

Additionally:
* MIR, JCB and Diners cards are now a drawable in Autofill
(previously PNG or generic icon on Android)
* Fixed a few other drawables.
* Removing the border from the PR icons because it's now built-in the asset
* Using setImageDrawable because it appears to be more efficient

BUG=722651
TEST=visual

Review-Url: https://codereview.chromium.org/2888803003
Cr-Commit-Position: refs/heads/master@{#473908}