Correct histograms name.

Correct histograms name for wifi network selection related metrics.

BUG=None
TEST=unit tests

Change-Id: I15ba7e319b2a48b3251fd8c9bb2a704454ba0505
Reviewed-on: https://chromium-review.googlesource.com/197543
Reviewed-by: Paul Stewart <pstew@chromium.org>
Commit-Queue: Peter Qiu <zqiu@chromium.org>
Tested-by: Peter Qiu <zqiu@chromium.org>
diff --git a/metrics.cc b/metrics.cc
index 66a9b2d..bda7ec8 100644
--- a/metrics.cc
+++ b/metrics.cc
@@ -266,14 +266,14 @@
 
 // static
 const char Metrics::kMetricWifiAutoConnectableServices[] =
-    "Network.Shill.wifi.AutoConnectableServices";
+    "Network.Shill.WiFi.AutoConnectableServices";
 const int Metrics::kMetricWifiAutoConnectableServicesMax = 50;
 const int Metrics::kMetricWifiAutoConnectableServicesMin = 1;
 const int Metrics::kMetricWifiAutoConnectableServicesNumBuckets = 10;
 
 // static
 const char Metrics::kMetricWifiAvailableBSSes[] =
-    "Network.Shill.wifi.AvailableBSSesAtConnect";
+    "Network.Shill.WiFi.AvailableBSSesAtConnect";
 const int Metrics::kMetricWifiAvailableBSSesMax = 50;
 const int Metrics::kMetricWifiAvailableBSSesMin = 1;
 const int Metrics::kMetricWifiAvailableBSSesNumBuckets = 10;