extensions: Use stl utilities from the base namespace

extensions/browser/api/vpn_provider/vpn_service.cc

Index: extensions/browser/api/vpn_provider/vpn_service.cc
diff --git a/extensions/browser/api/vpn_provider/vpn_service.cc b/extensions/browser/api/vpn_provider/vpn_service.cc
index ccc0fe2683ca71e8bb9d8ce103980fb584d405ac..2bd7f1e78c091d0c00df202d64c98798c84f4134 100644
--- a/extensions/browser/api/vpn_provider/vpn_service.cc
+++ b/extensions/browser/api/vpn_provider/vpn_service.cc
@@ -243,8 +243,8 @@ VpnService::~VpnService() {
   network_configuration_handler_->RemoveObserver(this);
   network_state_handler_->RemoveObserver(this, FROM_HERE);
   extension_registry_->RemoveObserver(this);
-  STLDeleteContainerPairSecondPointers(key_to_configuration_map_.begin(),
-                                       key_to_configuration_map_.end());
+  base::STLDeleteContainerPairSecondPointers(key_to_configuration_map_.begin(),
+                                             key_to_configuration_map_.end());
 }
 
 void VpnService::SendShowAddDialogToExtension(const std::string& extension_id) {
@@ -393,7 +393,7 @@ void VpnService::CreateConfiguration(const std::string& extension_id,
   }
 
   const std::string key = GetKey(extension_id, configuration_name);
-  if (ContainsKey(key_to_configuration_map_, key)) {
+  if (base::ContainsKey(key_to_configuration_map_, key)) {
     failure.Run(std::string(), std::string("Name not unique."));
     return;
   }
@@ -443,7 +443,7 @@ void VpnService::DestroyConfiguration(const std::string& extension_id,
                                       const FailureCallback& failure) {
   // The ID is the configuration name for now. This may change in the future.
   const std::string key = GetKey(extension_id, configuration_id);
-  if (!ContainsKey(key_to_configuration_map_, key)) {
+  if (!base::ContainsKey(key_to_configuration_map_, key)) {
     failure.Run(std::string(), std::string("Unauthorized access."));
     return;
   }
@@ -516,7 +516,7 @@ bool VpnService::VerifyConfigExistsForTesting(
     const std::string& extension_id,
     const std::string& configuration_name) {
   const std::string key = GetKey(extension_id, configuration_name);
-  return ContainsKey(key_to_configuration_map_, key);
+  return base::ContainsKey(key_to_configuration_map_, key);
 }
 
 bool VpnService::VerifyConfigIsConnectedForTesting(
@@ -664,7 +664,7 @@ void VpnService::Bind(
         pepper_vpn_provider_proxy) {
   // The ID is the configuration name for now. This may change in the future.
   const std::string key = GetKey(extension_id, configuration_id);
-  if (!ContainsKey(key_to_configuration_map_, key)) {
+  if (!base::ContainsKey(key_to_configuration_map_, key)) {
     failure.Run(std::string(),
                 std::string("Unauthorized access. "
                             "The configuration does not exist."));