tree 46df3a937de60deb2cfc02a432ad89b8e5109c16
parent 16de98cbcfdf89e9ee6c9fe29a0f46341ecfb9a4
author mukesh agrawal <quiche@chromium.org> 1376355333 -0700
committer ChromeBot <chrome-bot@google.com> 1376424458 -0700

shill: metrics: add ability to log metrics for debugging

To help us debug issues with metrics, log a message at scope
"metrics", level -5, whenever shill sends an enum or histogram
sample to UMA.

BUG=chromium:268061
TEST=new unit tests, manual

Manual testing
--------------
1. connect to wifi
2. ff_debug +metrics
3. ff_debug --level -5
4. wait 10 seconds
5. grep "Sending metric Network.Shill.Wifi.LinkMonitorResponseTimeSample" \
     /var/log/net.log
   -> should see matching lines

Change-Id: Iea2a8bfc3eb7d13d23a72d78d6c949d8a32b0e77
Reviewed-on: https://gerrit.chromium.org/gerrit/65651
Tested-by: mukesh agrawal <quiche@chromium.org>
Reviewed-by: Thieu Le <thieule@chromium.org>
Commit-Queue: mukesh agrawal <quiche@chromium.org>