Set Update Mechanism to Manual This CL sets the Update Mechanism to Manual in README files. Bug: 445311061 Change-Id: I3219dbfe370c8a03ae4f93f7c20e77163a2745cc Reviewed-on: https://chromium-review.googlesource.com/c/chromium/third_party/instrumented_libraries/+/7509853 Reviewed-by: Rachael Newitt <[email protected]> Owners-Override: Jordan Brown <[email protected]> Reviewed-by: Jiewei Qian <[email protected]>