chromeos: Use stl utilities from the base namespace

chromeos/network/network_configuration_handler_unittest.cc

Index: chromeos/network/network_configuration_handler_unittest.cc
diff --git a/chromeos/network/network_configuration_handler_unittest.cc b/chromeos/network/network_configuration_handler_unittest.cc
index 4d9d5174f194e2280072fe7478e690790f08e8e6..2bbe079c2bab3f142b9cf1c583d24087d3dc308a 100644
--- a/chromeos/network/network_configuration_handler_unittest.cc
+++ b/chromeos/network/network_configuration_handler_unittest.cc
@@ -99,8 +99,8 @@ class TestNetworkConfigurationObserver : public NetworkConfigurationObserver {
  public:
   TestNetworkConfigurationObserver() {}
   ~TestNetworkConfigurationObserver() override {
-    STLDeleteContainerPairSecondPointers(configurations_.begin(),
-                                         configurations_.end());
+    base::STLDeleteContainerPairSecondPointers(configurations_.begin(),
+                                               configurations_.end());
   }
 
   // NetworkConfigurationObserver