Default send_signed_out_session_logs to false

Bug: 1110384
Change-Id: I4b0fa3a00beadc760bdb4a0c845d651e792fac39
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2542422Reviewed-by: Dan H <harringtond@chromium.org>
Commit-Queue: Roger McFarlane <rogerm@chromium.org>
Cr-Commit-Position: refs/heads/master@{#827953}

components/feed/core/v2/config.h

@@ -39,7 +39,7 @@ struct Config {
   // Whether to attempt uploading actions when Chrome is hidden.
   bool upload_actions_on_enter_background = true;
   // Whether to send (pseudonymous) logs for signed-out sessions.
-  bool send_signed_out_session_logs = true;
+  bool send_signed_out_session_logs = false;
   // The max age of a signed-out session token.
   base::TimeDelta session_id_max_age = base::TimeDelta::FromDays(30);
   // Maximum number of images prefetched per refresh.