7638e654a0
This CL gets rid of DataSourceProxy for TracingSamplerProfiler. It also removes dead code around legacy StartupTracing. Change-Id: I9d687d681d26cd092e3afed263edf2c7543a9a51 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6203461 Reviewed-by: Mikhail Khokhlov <khokhlov@google.com> Commit-Queue: Etienne Pierre-Doray <etiennep@chromium.org> Cr-Commit-Position: refs/heads/main@{#1416309}