Drop chrome-common-chrome_content_client_constants.cc.patch

[mariospr]

This patch can be removed in favour of chromium_src overrides to
redefine the values for the constants we're interested in.

Resolves brave/brave-browser#14338

Submitter Checklist:

• I confirm that no security/privacy review is needed, or that I have requested one
• There is a ticket for my issue
• Used Github auto-closing keywords in the PR description above
• Wrote a good PR/commit description
• Added appropriate labels (QA/Yes or QA/No; release-notes/include or release-notes/exclude; OS/...) to the associated issue
• Checked the PR locally: npm run test -- brave_browser_tests, npm run test -- brave_unit_tests, npm run lint, npm run gn_check, npm run tslint
• Ran git rebase master (if needed)

Reviewer Checklist:

• A security review is not needed, or a link to one is included in the PR description
• New files have MPL-2.0 license header
• Adequate test coverage exists to prevent regressions
• Major classes, functions and non-trivial code blocks are well-commented
• Changes in component dependencies are properly reflected in gn
• Code follows the style guide
• Test plan is specified in PR before merging

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, 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-Exceptions-in-Brave
  • https://github.com/brave/brave-browser/wiki/QA-Guide
  • https://github.com/brave/brave-browser/wiki/P3A

Test Plan:

See Test plan for #2342

[mariospr]

All the relevant bots have passed already(*) so moving this to the review process:

• @mkarolin PTAL on behalf of @brave/patch-reviewers
• @simonhong PTAL as the original author

Thanks!

(*) The failure on the post-init bot is unrelated (being currently worked on separately)

[mkarolin]

This #include doesn't seem right.

[mariospr]

Oops! Removed now, thanks

[mariospr]

@simonhong Thanks for the review
@mkarolin Still need an owner's review, PTAL when you have a moment, thanks!

[mariospr]

@mkarolin Still need an owner's review, PTAL when you have a moment, thanks!

@mkarolin Ping?

[mkarolin]

++