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This cl is an android only change which allows service worker based
payment handlers on Android to declare their supported delegations
during registration.

The payment sheet is also changed to adaptively show/hide shipping/contact
details section depending on whether or not the user selected payment handler
will provide shipping address/payer's contact information. Whenever multiple
payment handlers exist, payment handlers which provide merchant requested
information are sorted before the rest.

With this change skipping the payment sheet to the payment handler
window when shipping/contact details are requested will be possible
as long as the payment handler can provide this information.

Bug: 984694
Change-Id: I5693a7bd60d7a65b0f9ff5d1c0734867240b57fb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1902077Reviewed-by: Rouslan Solomakhin <rouslan@chromium.org>
Commit-Queue: Sahel Sharify <sahel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#714647}