Refactored DeviceStatusCollector to enable truely asynchronous status queries

chrome/common/pref_names.cc

Index: chrome/common/pref_names.cc
diff --git a/chrome/common/pref_names.cc b/chrome/common/pref_names.cc
index c605063cb7d661ea7edb825faea6c34d8e3e637c..21d67b0609c457cb34e1aa1024d78600d04e1f6d 100644
--- a/chrome/common/pref_names.cc
+++ b/chrome/common/pref_names.cc
@@ -1736,10 +1736,6 @@ const char kAutoEnrollmentPowerLimit[] = "AutoEnrollmentPowerLimit";
 // them to the policy server.
 const char kDeviceActivityTimes[] = "device_status.activity_times";
 
-// A pref holding the last known location when device location reporting is
-// enabled.
-const char kDeviceLocation[] = "device_status.location";
-
 // A pref holding the value of the policy used to disable mounting of external
 // storage for the user.
 const char kExternalStorageDisabled[] = "hardware.external_storage_disabled";