tree a6a2783b20c5f64b5bb095cefb184908217c0918
parent 8585b207dc9502256c2a428611e948e105db96b6
author Paul Stewart <pstew@chromium.org> 1348633266 -0700
committer Gerrit <chrome-bot@google.com> 1348742582 -0700

shill: WiFi: Add metric for Signal Strength

Add a metric that gives the signal strength at time of
successful association.

BUG=chromium-os:34782
TEST=Run unit tests (with edits for new metric), run on device,
connect to WiFi network, browse to chrome://histograms

Change-Id: Idf0754fd5adf7f4931a0a647940477922335d196
Reviewed-on: https://gerrit.chromium.org/gerrit/34095
Reviewed-by: Thieu Le <thieule@chromium.org>
Reviewed-by: Ben Chan <benchan@chromium.org>
Reviewed-by: mukesh agrawal <quiche@chromium.org>
Commit-Ready: Paul Stewart <pstew@chromium.org>
Tested-by: Paul Stewart <pstew@chromium.org>