Revert "Android: AppHooks->ServiceLoader for AccountManagerFacadeProvider"

This reverts commit 6c1b63c6.

Reason for revert: Might not work in debug builds

Original change's description:
> Android: AppHooks->ServiceLoader for AccountManagerFacadeProvider
>
> Bug: 40901855
> Change-Id: I8ecba2cf1f6aa5f3054bbecd8023959813e3adee
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5738736


> Owners-Override: Andrew Grieve <agrieve@chromium.org>
> Reviewed-by: Sam Maier <smaier@chromium.org>
> Commit-Queue: Andrew Grieve <agrieve@chromium.org>
> Code-Coverage: findit-for-me@appspot.gserviceaccount.com <findit-for-me@appspot.gserviceaccount.com>
> Cr-Commit-Position: refs/heads/main@{#1342968}

Bug: 40901855
Change-Id: I8b2a628a9f44a77dd1d3d49f39abc121553e8a54
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5791597
Owners-Override: Andrew Grieve <agrieve@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Andrew Grieve <agrieve@chromium.org>
Auto-Submit: Andrew Grieve <agrieve@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1343020}