[EPIC] Remote Rollout Feature Flags for Extension and Mobile

[DDDDDanica]

What is this about?

Notes:
https://docs.google.com/document/d/1mQ1LKbD2wh_SMDfHIVGv4LkBc1Ze5lUuUaWOlnydL8M/edit#heading=h.bns7qeiu2r17

ADR:
https://github.com/MetaMask/decisions/pull/43

Swagger API For LaunchDarklyController:
https://client-config.api.cx.metamask.io/docs#/LaunchDarkly/LaunchDarklyController_getAll

Scenario

No response

Design

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Technical Details

Ticket breakdown:

• Extension implementation

1. feature-flag-controller [27254] (Create a new feature-flag-controller #27254)
2. Extension implementation [27256] (Implement feature flags in extension #27256)
3. Developer options for extension [27255] (Modify each remote feature flags locally for testing purpose #27255)

• Mobile implementation 2054

Threshold implementation:

• Controller: 3742
• Extension: 3744
• Mobile 2065

Threat Modeling Framework

No response

Acceptance Criteria

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Stakeholder review needed before the work gets merged

• Engineering (needed in most cases)
• Design
• Product
• QA (automation tests are required to pass before merging PRs but not all changes are covered by automation tests - please review if QA is needed beyond automation tests)
• Security
• Legal
• Marketing
• Management (please specify)
• Other (please specify)

References

No response