Update GwpAsanLinux fieldtrial testing parameters

We should lower the sampling rate on Linux/ChromeOS, as total page loads
and 95th-99th percentile latency metrics see some minor regressions.

Change-Id: I5dd13af92d68d35de933c2fe63f2de651699e26a
Bug: 1238561
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3663925
Commit-Queue: Chris Thompson <cthomp@chromium.org>
Commit-Queue: Matthew Denton <mpdenton@chromium.org>
Reviewed-by: Chris Thompson <cthomp@chromium.org>
Auto-Submit: Matthew Denton <mpdenton@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1007470}
NOKEYCHECK=True
GitOrigin-RevId: 92f705e9c23ee0354d57248072bff7e2b992f0fa
1 file changed