Use a direct include of utf_string_conversions.h in chrome/browser/, part 3.

chrome/browser/spellchecker/spellcheck_action_unittest.cc

 // Copyright (c) 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 <string>
 
 #include "base/json/json_reader.h"
-#include "base/utf_string_conversions.h"
+#include "base/strings/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/browser/spellchecker/spellcheck_action.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 TEST(SpellcheckActionTest, FinalActionsTest) {
   static const SpellcheckAction::SpellcheckActionType kFinalActions[] = {
     SpellcheckAction::TYPE_ADD_TO_DICT,
     SpellcheckAction::TYPE_IGNORE,
     SpellcheckAction::TYPE_IN_DICTIONARY,
     SpellcheckAction::TYPE_MANUALLY_CORRECTED,
@@ skipping 63 matching lines @@
       "{\"actionTargetIndex\": 42, \"actionType\": \"SELECT\"}" },
   };
   for (size_t i = 0; i < kNumTestCases; ++i) {
     scoped_ptr<base::DictionaryValue> serialized(
         kTestCases[i].action.Serialize());
     scoped_ptr<base::Value> expected(
         base::JSONReader::Read(kTestCases[i].expected));
     EXPECT_TRUE(serialized->Equals(expected.get()));
   }
 }