Update product_logo and product_log_name images

[yrliou]

Fix brave/brave-browser#447
Thanks @rossmoody for providing these images.

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).
• Ran git rebase -i to squash commits (if needed).
• Tagged reviewers and labelled the pull request as needed.
• Request a security/privacy review as needed.

Test Plan:

Open chrome://settings and click Manage other people, brave's logo should be shown in the new dialog instead of chromium's logo.

Reviewer Checklist:

• New files have MPL-2.0 license header.
• Request a security/privacy review as needed.
• Adequate test coverage exists to prevent regressions

[AlexeyBarabash]

++