Use a direct include of utf_string_conversions.h in android_webview/, apps/, ash/, base/.

base/strings/string_split_unittest.cc

 // Copyright (c) 2012 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/string_split.h"
 
-#include "base/utf_string_conversions.h"
+#include "base/strings/utf_string_conversions.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using ::testing::ElementsAre;
 
 namespace base {
 
 namespace {
 
 #if !defined(WCHAR_T_IS_UTF16)
@@ skipping 291 matching lines @@
     SplitStringAlongWhitespace(data[i].input, &results);
     ASSERT_EQ(data[i].expected_result_count, results.size());
     if (data[i].expected_result_count > 0)
       ASSERT_EQ(data[i].output1, results[0]);
     if (data[i].expected_result_count > 1)
       ASSERT_EQ(data[i].output2, results[1]);
   }
 }
 
 }  // namespace base