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

content/browser/dom_storage/dom_storage_context_impl_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/bind.h"
 #include "base/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/message_loop/message_loop.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "base/time/time.h"
 #include "content/browser/dom_storage/dom_storage_area.h"
 #include "content/browser/dom_storage/dom_storage_context_impl.h"
 #include "content/browser/dom_storage/dom_storage_namespace.h"
 #include "content/browser/dom_storage/dom_storage_task_runner.h"
 #include "content/public/browser/local_storage_usage_info.h"
 #include "content/public/browser/session_storage_namespace.h"
 #include "content/public/browser/session_storage_usage_info.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "webkit/browser/quota/mock_special_storage_policy.h"
 
+using base::ASCIIToUTF16;
+
 namespace content {
 
 class DOMStorageContextImplTest : public testing::Test {
  public:
   DOMStorageContextImplTest()
     : kOrigin(GURL("http://dom_storage/")),
       kKey(ASCIIToUTF16("key")),
       kValue(ASCIIToUTF16("value")),
       kDontIncludeFileInfo(false),
       kDoIncludeFileInfo(true) {
@@ skipping 333 matching lines @@
   // Verify that the merge was successful.
   ASSERT_TRUE(alias_ns->alias_master_namespace() == target_ns);
   base::NullableString16 read_value = target_ns_area->GetItem(kKey);
   EXPECT_TRUE(!read_value.is_null() && read_value.string() == kValue2);
   DOMStorageArea* alias_ns_area = alias_ns->OpenStorageArea(kOrigin);
   read_value = alias_ns_area->GetItem(kKey2);
   EXPECT_TRUE(!read_value.is_null() && read_value.string() == kKey2Value);
 }
 
 }  // namespace content