Move statistics_provider to chromeos/system

chrome/browser/chromeos/extensions/info_private_api.cc

Index: chrome/browser/chromeos/extensions/info_private_api.cc
diff --git a/chrome/browser/chromeos/extensions/info_private_api.cc b/chrome/browser/chromeos/extensions/info_private_api.cc
index f7b54fcbe74bf76a0a12358309179c515e143c37..17c3e84939831995d5d37a627ad5534f9766bc32 100644
--- a/chrome/browser/chromeos/extensions/info_private_api.cc
+++ b/chrome/browser/chromeos/extensions/info_private_api.cc
@@ -8,11 +8,11 @@
 #include "base/values.h"
 #include "chrome/browser/chromeos/login/startup_utils.h"
 #include "chrome/browser/chromeos/login/user_manager.h"
-#include "chrome/browser/chromeos/system/statistics_provider.h"
 #include "chromeos/network/device_state.h"
 #include "chromeos/network/network_handler.h"
 #include "chromeos/network/network_state_handler.h"
 #include "chromeos/network/shill_property_util.h"
+#include "chromeos/system/statistics_provider.h"
 #include "third_party/cros_system_api/dbus/service_constants.h"
 
 using chromeos::NetworkHandler;
@@ -66,7 +66,7 @@ base::Value* ChromeosInfoPrivateGetFunction::GetValue(
     std::string hwid;
     chromeos::system::StatisticsProvider* provider =
         chromeos::system::StatisticsProvider::GetInstance();
-    provider->GetMachineStatistic(chromeos::system::kHardwareClass, &hwid);
+    provider->GetMachineStatistic(chromeos::system::kHardwareClassKey, &hwid);
     return new base::StringValue(hwid);
   } else if (property_name == kPropertyHomeProvider) {
     const chromeos::DeviceState* cellular_device =