hindsight: description fix required for privacy reason.

Bug: 1012936
Change-Id: Iac49d866aa30160da097179506e0bc6bb1cae024
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1865910Reviewed-by: Charles . <charleszhao@chromium.org>
Reviewed-by: Tony Yeoman <tby@chromium.org>
Commit-Queue: Charles . <charleszhao@chromium.org>
Commit-Queue: Tony Yeoman <tby@chromium.org>
Auto-Submit: Charles . <charleszhao@chromium.org>
Cr-Commit-Position: refs/heads/master@{#706723}

chrome/browser/flag_descriptions.cc

@@ -3378,7 +3378,7 @@ const char kEnableCrOSActionRecorderName[] = "Enable CrOS action recorder";
 const char kEnableCrOSActionRecorderDescription[] =
     "When enabled, each app launching, file opening, setting change, and url "
     "visiting will be logged locally into an encrypted file. Should not be "
-    "enabled.";
+    "enabled. Be aware that hash option only provides a thin layer of privacy.";
 
 const char kEnableDiscoverAppName[] = "Enable Discover App";
 const char kEnableDiscoverAppDescription[] =