Fix using separated buffers for each tile.

The problem was that each LogBuffer should have a unique name. Now the
buffers have a name associated with a tile spec they're logging.

Test: atest QSTileLoggerTest
Test: manual. Create multiple new tiles
Bug: 301055700
Change-Id: Ifff3b54091ded44f22c8630005344a74ef277b0f
4 files changed