PaymentRequest: Remove shipping_address_errors_ field

After 1280563 CL, our implementation doesn't overwrite the details
information each time. So, we can use details.shippingAddressErrors
directly instead of having a seperated field.

Bug: none
Change-Id: Ic1123fbb67a2f203b8c69c28de18ad172aed843d
Reviewed-on: https://chromium-review.googlesource.com/c/1374192
Reviewed-by: Rouslan Solomakhin <rouslan@chromium.org>
Commit-Queue: Jinho Bang <jinho.bang@samsung.com>
Cr-Commit-Position: refs/heads/master@{#616629}
2 files changed