Fixes save password prompt.

[mkarolin]

Fixes brave/brave-browser#12398

Image files we were overriding got renamed.

Chromium change:

https://chromium.googlesource.com/chromium/src.git/+/39eded942d854f367be5bde332189a6a8271c76f

commit 39eded942d854f367be5bde332189a6a8271c76f
Author: Mohamed Amir Yosef [email protected]
Date: Tue Sep 22 17:27:02 2020 +0000

[Passwords] Update header image for different states in Save Bubble

As per the attached bug, here is the logic for changing the header image

- The illustration should change when the user switches between "Save to device" and "Sav  to account".
- In the Update bubble, the illustration should change based on where the update will go.
- If the update will go to both locations, use the "account" image.

Screencast:
Light mode: https://screencast.googleplex.com/cast/NjQxNjYzNjU3MzY0Njg0OHw0NTg2MTgzYy1kMw
Dark mode: https://screencast.googleplex.com/cast/NTY4MTQ3NTYxMTUyNTEyMHwzOTI4Y2JkYy1mZQ

Bug: 1115936

Resolves

Submitter Checklist:

• Submitted a ticket for my issue if one did not already exist.
• Used Github auto-closing keywords in the commit message.
• Added/updated tests for this change (for new code or code which already has tests).
• Verified that these changes build without errors on
  • Android
  • iOS
  • Linux
  • macOS
  • Windows
• Verified that these changes pass automated tests (unit, browser, security tests) on
  • iOS
  • Linux
  • macOS
  • Windows
• Verified that all lint errors/warnings are resolved (npm run lint, npm run gn_check)
• Ran git rebase master (if needed).
• Ran git rebase -i to squash commits (if needed).
• Tagged reviewers and labelled the pull request as needed.
• Requested a security/privacy review as needed.
• Added appropriate QA labels (QA/Yes or QA/No) to the associated issue
• Added appropriate release note labels (release-notes/include or release-notes/exclude) to the associated issue
• Public documentation has been updated as necessary. For instance:
  • https://github.com/brave/brave-browser/wiki/Deviations-from-Chromium-(features-we-disable-or-remove)
  • https://github.com/brave/brave-browser/wiki/Proxy-redirected-URLs
  • https://github.com/brave/brave-browser/wiki/Fingerprinting-Protections
  • https://github.com/brave/brave-browser/wiki/Brave%E2%80%99s-Use-of-Referral-Codes
  • https://github.com/brave/brave-browser/wiki/Custom-Headers
  • https://github.com/brave/brave-browser/wiki/Web-compatibility-issues-with-tracking-protection
  • https://github.com/brave/brave-browser/wiki/QA-Guide

Test Plan:

Reviewer Checklist:

• New files have MPL-2.0 license header.
• Request a security/privacy review as needed.
• Adequate test coverage exists to prevent regressions
• Verify test plan is specified in PR before merging to source

After-merge Checklist:

• The associated issue milestone is set to the smallest version that the
  changes has landed on.
• All relevant documentation has been updated.