chromeos: Use stl utilities from the base namespace

chromeos/settings/timezone_settings_unittest.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <memory>
 
 #include "base/stl_util.h"
 #include "chromeos/settings/timezone_settings_helper.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/icu/source/common/unicode/unistr.h"
@@ skipping 22 matching lines @@
  public:
   KnownTimeZoneTest() {}
   ~KnownTimeZoneTest() override {}
 
   void SetUp() override {
     for (const char* id : kTimeZones) {
       timezones_.push_back(TimeZone::createTimeZone(UnicodeString(id)));
     }
   }
 
-  void TearDown() override { STLDeleteElements(&timezones_); }
+  void TearDown() override { base::STLDeleteElements(&timezones_); }
 
  protected:
   std::vector<TimeZone*> timezones_;
 };
 
 TEST_F(KnownTimeZoneTest, IdMatch) {
   static struct {
     const char* id;
     const char* matched;
   } timezone_match_list[] = {
@@ skipping 43 matching lines @@
   for (const char* id : no_match_list) {
     std::unique_ptr<TimeZone> input(
         TimeZone::createTimeZone(UnicodeString(id)));
     EXPECT_EQ(NULL, GetKnownTimezoneOrNull(*input, timezones_))
         << "input=" << id;
   }
 }
 
 }  // namespace system
 }  // namespace chromeos