cashew: rename UsageRequestStatus metric

This CL renames the Cros.Network.Cashew.UsageRequestStatus metric to
Network.Cellular.UsageRequestStatus to better conform with existing
conventions.

BUG=chromium-os:9887
TEST=unit tests, manual testing on device

Change-Id: I681f7f7e17493805723d8a51130ccdce709698c5
Reviewed-on: http://gerrit.chromium.org/gerrit/5363
Reviewed-by: Darin Petkov <petkov@chromium.org>
Tested-by: Vince Laviano <vlaviano@chromium.org>
diff --git a/src/metrics_manager.h b/src/metrics_manager.h
index 86289c3..3a75b74 100644
--- a/src/metrics_manager.h
+++ b/src/metrics_manager.h
@@ -16,7 +16,7 @@
     MetricsManager() {}
     virtual ~MetricsManager() {}
 
-    // Cros.Network.Cashew.UsageRequestStatus UMA enum
+    // Network.Cellular.UsageRequestStatus UMA enum
     typedef enum {
       kUsageRequestStatusFailed = 0,
       kUsageRequestStatusOk,
diff --git a/src/metrics_manager_impl.cc b/src/metrics_manager_impl.cc
index 6c298bc..3265140 100644
--- a/src/metrics_manager_impl.cc
+++ b/src/metrics_manager_impl.cc
@@ -10,7 +10,7 @@
 
 // UMA metric names
 static const char *kUsageRequestStatusMetric =
-    "Cros.Network.Cashew.UsageRequestStatus";
+    "Network.Cellular.UsageRequestStatus";
 
 MetricsManagerImpl::MetricsManagerImpl() {
   metrics_library_.Init();
diff --git a/src/metrics_manager_impl.h b/src/metrics_manager_impl.h
index 129f00e..7ebac8a 100644
--- a/src/metrics_manager_impl.h
+++ b/src/metrics_manager_impl.h
@@ -17,7 +17,7 @@
     MetricsManagerImpl();
     virtual ~MetricsManagerImpl();
 
-    // Cros.Network.Cashew.UsageRequestStatus
+    // Network.Cellular.UsageRequestStatus
     virtual void OnUsageRequestStatusSample(UsageRequestStatus status);
 
   private: