Add article "Customize your performance data with extensibility API"

[mikehoffms]

status: todo: create 3 remaining pngs

Rendered article for review:

• Customize your performance data with extensibility API
  • /devtools-guide-chromium/performance/extension.md
  • Internal preview: https://review.learn.microsoft.com/microsoft-edge/devtools-guide-chromium/performance/extension?branch=pr-en-us-3406
  • External preview: https://github.com/MicrosoftDocs/edge-developer/blob/user/mikehoffms/extensibility/microsoft-edge/devtools-guide-chromium/performance/extension.md
  • Planned live: https://learn.microsoft.com/microsoft-edge/devtools-guide-chromium/performance/extension
  • Added article.

AB#55538778

[learn-build-service-prod]

Learn Build status updates of commit 8c9380a:

✅ Validation status: passed

File	Status	Preview URL	Details
microsoft-edge/devtools-guide-chromium/performance/extension.md	✅Succeeded	View
microsoft-edge/devtools-guide-chromium/performance/index.md	✅Succeeded	View
microsoft-edge/toc.yml	✅Succeeded	View

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[learn-build-service-prod]

Learn Build status updates of commit af24e29:

✅ Validation status: passed

File	Status	Preview URL	Details
microsoft-edge/devtools-guide-chromium/performance/extension.md	✅Succeeded	View
microsoft-edge/devtools-guide-chromium/performance/index.md	✅Succeeded	View
microsoft-edge/toc.yml	✅Succeeded	View

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[learn-build-service-prod]

Learn Build status updates of commit 12672ca:

⚠️ Validation status: warnings

File	Status	Preview URL	Details
microsoft-edge/devtools-guide-chromium/performance/extension.md	⚠️Warning	View	Details
microsoft-edge/devtools-guide-chromium/performance/extension-images/capture-settings-icon.png	✅Succeeded	View
microsoft-edge/devtools-guide-chromium/performance/extension-images/custom-tracks-setting.png	✅Succeeded	View
microsoft-edge/devtools-guide-chromium/performance/extension-images/example.png	✅Succeeded	View
microsoft-edge/devtools-guide-chromium/performance/extension-images/expanded-custom-tracks.png	✅Succeeded	View
microsoft-edge/devtools-guide-chromium/performance/extension-images/performance-icon.png	✅Succeeded	View
microsoft-edge/devtools-guide-chromium/performance/extension-images/record-icon.png	✅Succeeded	View
microsoft-edge/devtools-guide-chromium/performance/index.md	✅Succeeded	View
microsoft-edge/toc.yml	✅Succeeded	View

microsoft-edge/devtools-guide-chromium/performance/extension.md

• Line 39, Column 3: [Warning: bookmark-not-found - See documentation] Cannot find bookmark '#see-also' in 'devtools-guide-chromium/performance/extension.md'.
• Line 256, Column 1: [Warning: file-not-found - See documentation] Invalid file link: './extension-images/custom-track-console-timestamp.png'.
• Line 306, Column 1: [Warning: file-not-found - See documentation] Invalid file link: './extension-images/custom-track.png'.
• Line 334, Column 1: [Warning: file-not-found - See documentation] Invalid file link: './extension-images/marker-in-timings.png'.

For more details, please refer to the build report.

Note: Your PR may contain errors or warnings or suggestions unrelated to the files you changed. This happens when external dependencies like GitHub alias, Microsoft alias, cross repo links are updated. Please use these instructions to resolve them.

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[learn-build-service-prod]

Learn Build status updates of commit 9673ea3:

⚠️ Validation status: warnings

File	Status	Preview URL	Details
microsoft-edge/devtools-guide-chromium/performance/extension.md	⚠️Warning	View	Details
microsoft-edge/devtools-guide-chromium/performance/extension-images/capture-settings-icon.png	✅Succeeded	View
microsoft-edge/devtools-guide-chromium/performance/extension-images/custom-tracks-setting.png	✅Succeeded	View
microsoft-edge/devtools-guide-chromium/performance/extension-images/example.png	✅Succeeded	View
microsoft-edge/devtools-guide-chromium/performance/extension-images/expanded-custom-tracks.png	✅Succeeded	View
microsoft-edge/devtools-guide-chromium/performance/extension-images/performance-icon.png	✅Succeeded	View
microsoft-edge/devtools-guide-chromium/performance/extension-images/record-icon.png	✅Succeeded	View
microsoft-edge/toc.yml	✅Succeeded	View

microsoft-edge/devtools-guide-chromium/performance/extension.md

• Line 256, Column 1: [Warning: file-not-found - See documentation] Invalid file link: './extension-images/custom-track-console-timestamp.png'.
• Line 306, Column 1: [Warning: file-not-found - See documentation] Invalid file link: './extension-images/custom-track.png'.
• Line 334, Column 1: [Warning: file-not-found - See documentation] Invalid file link: './extension-images/marker-in-timings.png'.

For more details, please refer to the build report.

Note: Your PR may contain errors or warnings or suggestions unrelated to the files you changed. This happens when external dependencies like GitHub alias, Microsoft alias, cross repo links are updated. Please use these instructions to resolve them.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
• Post your question in the Learn support channel