replace common signal CHANGE_SIZE_END with a change size event. (ampp…

…roject#20728)

Revert "Enables layers in canary (ampproject#20512)" (ampproject#20699)

This reverts commit 3946427.

Create ads/google/a4a/shared/ directory (ampproject#20620)

This is intended to make <amp-ad type=adsense> and
<amp-ad type=doubleclick> code easier to maintain going forward by
keeping it in sync with proprietary Google code located elsewhere that
hits the same endpoints.

Revert "🐛async-input: Fixed NonXHR GET on amp-form with Async Input E…

…lements (ampproject#20362)" (ampproject#20601)

This reverts commit de0ea8e.

🐛story: fix fie querySelector (ampproject#20506)

* fix querySelector error

* use element

Revert new user error in purifier. (ampproject#20501)

Fixing background-audio on amp-story-page. (ampproject#20477)

Split up element/attr user errors, ignore bindings. (ampproject#20407)

Additional logic for carousel v2. (ampproject#20439)

* Additional logic for carousel v2.

- Update the current index on scroll
- Move slides around on scroll
- Implement scroll position restoration (when resetting the reference
point or when rotating)
- Ignore attributes that have no configuration option
- Make media query attribute parsing logic more robust
- Unskip tests.

🐛Move GEO_IN_GROUP types to pure file (ampproject#20411)

* Move GEO_IN_GROUP types to pure file

Fixes ampproject#20392

* Fix tests