[Feature] Three-dot menu extensions item

[eliserichards]

Meta: #17796
Followup to #17771

UX point of contact: @violasong (Victoria)

Figma designs (bottom right, labeled "Final design"): https://www.figma.com/file/NHu4cTmzfYgi3QJz5DIDWD/Fenix-Toolbar-Menus?node-id=0%3A1

Acceptance criteria

• We are changing the label of Addons in the three-dot menu to "Extensions"
• This change is in both the main three-dot menu and the new tab menu
• States of the menu are as follows:
  • A user has extensions installed (it doesn't matter if they are enabled): see the right-pointing arrow
  • A user has no extensions installed: the right-pointing arrow should not be there, and the full menu item should be clickable
• Clicking on the the arrow should navigate the user to the list of installed addons
• Clicking on the main area of the menu item should navigate the user to the main addons list

---

Addons installed

No addons installed

┆Issue is synchronized with this Jira Task

[eliserichards]

Open question: are we changing the Addons Manager strings in all places?

[violasong]

I believe so! (But double-checking with @topotropic re: we are changing the label of Addons to "Extensions" everywhere)

[mcarare]

@violasong is there any decision regarding the "Report site issue" item? It will be placed in this menu, or it will be in the extensions menu (the functionality is provided by an extension)? This placement might influence the way we construct the menu in AC. Sorry if there is already info on this on the mocks, I did not notice it. Thank you!

[ghost]

Why is there the Sig-in anyway?
There should not existing things that is not Frequently used...

[violasong]

"Report site issue" will be put in this menu for prerelease versions. (See this issue)

[mcarare]

Opened mozilla-mobile/android-components#9873 for the AC changes.

[mcarare]

Notes for QA:

• Label should still say add-ons, following the decision made here: Update all add-ons reference to extensions #18534.
• Can be tested only on debug builds.

[LaurentiuApahideanSV]

Verified as fixed on the latest debug build downloaded on the 24th of March.

Devices used:

• OnePlus 6T (Android 9)
• Google Pixel 3 XL (Android 9)