Remove rescoping from PermissionBackend

Rescoping a permission backend to a new user is in place for performance
reasons. Looking at it from the software engineering perspective, we
would rather remove the rescoping to make the interface easier to use
and implement.

This commit refactors the callers of rescoping methods to construct
permission backends from scratch. On googlesource.com we have metrics in
place and will monitor the impact on performance. In case there is a
negative effect, we will revert the commit.

The commit leaves the interface definition as-is so that it can be
easily reverted. If the experiment is successful, we will remove the
interface definition of #user(CurrentUser user).

Change-Id: Ia6abfd735651b99942d5af82a322ddc845525c98
5 files changed
tree: 604b3cfbf94f3e435476e4231c3c606817274064
  1. .settings/
  2. antlr3/
  3. contrib/
  4. Documentation/
  5. gerrit-gwtdebug/
  6. gerrit-gwtui/
  7. gerrit-gwtui-common/
  8. gerrit-plugin-gwtui/
  9. java/
  10. javatests/
  11. lib/
  12. plugins/
  13. polygerrit-ui/
  14. prolog/
  15. prologtests/
  16. proto/
  17. resources/
  18. tools/
  19. webapp/
  20. .bazelproject
  21. .editorconfig
  22. .git-blame-ignore-revs
  23. .gitignore
  24. .gitmodules
  25. .mailmap
  26. .pydevproject
  27. 0001-Replace-native-http-git-_archive-with-Skylark-rules.patch
  28. 0002-Bump-Dagger-to-2.14.1-to-support-Java-9.patch
  29. BUILD
  30. COPYING
  31. INSTALL
  32. README.md
  33. SUBMITTING_PATCHES
  34. version.bzl
  35. WORKSPACE
README.md

Gerrit Code Review

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