GitLab

PaymentUIsObserver plays the same role as PaymentUiService#Delegate
and so should be merged into one. This CL moves the PaymentUIsObserver
methods into PaymentUiService#Delegate without any change.

Bug: 1025619

Change-Id: I6e951168c7ed9c0e3459e55671aec9cbb69742da
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2536992
Commit-Queue: Liquan (Max) Gu <maxlg@chromium.org>
Reviewed-by: Rouslan Solomakhin <rouslan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#827830}