Add configurable timeout for perf metrics

[jonathanKingston]

Asana Task/Github Issue:

Description

Allow for remote config for the timing data for LCP.

Testing Steps

Checklist

Please tick all that apply:

• I have tested this change locally
• I have tested this change locally in all supported browsers
• This change will be visible to users
• I have added automated tests that cover this change
• I have ensured the change is gated by config
• This change was covered by a ship review
• This change was covered by a tech design
• Any dependent config has been merged

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Note

Adds a configurable timeout for collecting LCP in expanded performance metrics, sourced from feature setting and propagated to metric collection.

• Expanded performance metrics:
  • getExpandedPerformanceMetrics(timeoutMs) now accepts a timeout (default 500 ms) and forwards it to waitForLCP.
• Feature wiring:
  • PerformanceMetrics.triggerExpandedPerformanceMetrics reads expandedTimeoutMs (default 5000 ms) from feature settings and passes it to getExpandedPerformanceMetrics.

^{Written by Cursor Bugbot for commit 2c2ac98. This will update automatically on new commits. Configure here.}

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[github-actions]

Temporary Branch Update

The temporary branch has been updated with the latest changes. Below are the details:

• Branch Name: pr-releases/pr-2057
• Commit Hash: 903f19d589e59e1c099b976af4c97ff3acf84d7b
• Last Updated: November 28, 2025 at 5:32:12 PM UTC
• Install Command: npm i github:duckduckgo/content-scope-scripts#903f19d589e59e1c099b976af4c97ff3acf84d7b

Please use the above install command to update to the latest version.

[github-actions]

[Beta] Generated file diff

Time updated: Fri, 28 Nov 2025 17:32:46 GMT

Android

    - android/adsjsContentScope.js

• android/contentScope.js

File has changed

Apple

    - apple/contentScopeIsolated.js

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Chrome-mv3

    - chrome-mv3/inject.js

File has changed

Integration

    - integration/contentScope.js

File has changed

Windows

    - windows/contentScope.js

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