Need to change "return view" to "return std::move(view)" ?

Yep, that's what I'm thinking. It's currently landing: https://codereview.chromium.org/2853373003

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/bf16ab86c8929ad72134db3d09bd3681e70bd9e9

commit bf16ab86c8929ad72134db3d09bd3681e70bd9e9
Author: anthonyvd <anthonyvd@chromium.org>
Date: Tue May 02 18:53:02 2017

[Web Payments] Explicitly move SheetView

BUG= 717612 

Review-Url: https://codereview.chromium.org/2853373003
Cr-Commit-Position: refs/heads/master@{#468723}

[modify] https://crrev.com/bf16ab86c8929ad72134db3d09bd3681e70bd9e9/chrome/browser/ui/views/payments/payment_request_sheet_controller.cc

This should now be fixed, please reopen otherwise.