Android: Fix a batch of @NullUnmarked suppressions

Also marks Map.remove() and Map.put() as @Nullable, which is required to
use their return values in assumeNonNull().

Bug: 389129271
Change-Id: Ib05618644f4bd1b63bc6cde00ae5ee82800d522a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6211297
Commit-Queue: Andrew Grieve <[email protected]>
Owners-Override: Andrew Grieve <[email protected]>
Reviewed-by: Mohamed Heikal <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1412943}
NOKEYCHECK=True
GitOrigin-RevId: 39e2175793634a0868e205685aec39b161f6996f
1 file changed
tree: eb5a08f797f093d4cb8b49919d555ef22591d9fd
  1. src/
  2. test/
  3. BUILD.gn
  4. OWNERS