Ad matching for ads that are not categorized

[tmancey]

Fixes brave/brave-browser#5183
Requires #3171
Requires #3172

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)
• Ran git rebase master (if needed).
• 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.
• Add appropriate QA labels (QA/Yes or QA/No) to include the closed issue in milestone
• 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-Protection-Mode
  • 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:

• Confirm targeted ads for PARENT-CHILD page classifications are served for the United States of America, Canada, United Kingdom, Germany, France, Australia, New Zealand and Ireland
• Confirm targeted ads for PARENT page classifications are served for the United States of America, Canada, United Kingdom, Germany, France, Australia, New Zealand and Ireland
• Confirm untargeted ads are served for the United States of America, Canada, United Kingdom, Germany, France, Australia, New Zealand and Ireland if no eligible ads are available
• Confirm untargeted ads are served for Argentina, Austria, Brazil, Switzerland, Chile, Colombia, Denmark, Ecuador, Israel, India, Italy, Korea, Mexico, Netherlands, Peru, Philippines, Poland, Sweden, Singapore, Venezuela and South Africa

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.

[tmancey]

@jsecretan @lukemulks The above issue is development complete, we need a list of untargeted regions for initial release. Thanks

[kylehickinson]

iOS changes look good

[emerick]

LGTM, one minor comment

[emerick]

Function name in comment needs an update...

[tmancey]

Fixed

[emerick]

LGTM

[tmancey]

Added support for Argentina, Austria, Brazil, Switzerland, Chile, Colombia, Denmark, Ecuador, Israel, India, Italy, Korea, Mexico, Netherlands, Peru, Philippines, Poland, Sweden, Singapore, Venezuela and South Africa to Ads (untargeted)

[emerick]

LGTM