Update uses of UTF conversions in content/ to use the base:: namespace.

content/common/dom_storage/dom_storage_map_unittest.cc

 // Copyright 2013 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 "base/strings/utf_string_conversions.h"
 #include "content/common/dom_storage/dom_storage_map.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
+using base::ASCIIToUTF16;
+
 namespace content {
 
 TEST(DOMStorageMapTest, DOMStorageMapBasics) {
   const base::string16 kKey(ASCIIToUTF16("key"));
   const base::string16 kValue(ASCIIToUTF16("value"));
   const size_t kValueBytes = kValue.size() * sizeof(char16);
   const size_t kItemBytes =
       (kKey.size() + kValue.size()) * sizeof(char16);
   const base::string16 kKey2(ASCIIToUTF16("key2"));
   const size_t kKey2Bytes = kKey2.size() * sizeof(char16);
@@ skipping 96 matching lines @@
   // When overbudget, a new value of greater size than the existing value can
   // not be set, but a new value of lesser or equal size can be set.
   EXPECT_TRUE(map->SetItem(kKey, kValue, &old_nullable_value));
   EXPECT_FALSE(map->SetItem(kKey, base::string16(kValue + kValue),
                             &old_nullable_value));
   EXPECT_TRUE(map->SetItem(kKey, base::string16(), &old_nullable_value));
   EXPECT_EQ(kValue, old_nullable_value.string());
 }
 
 }  // namespace content