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

base/command_line_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 <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
-#include "base/utf_string_conversions.h"
+#include "base/strings/utf_string_conversions.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using base::FilePath;
 
 // To test Windows quoting behavior, we use a string that has some backslashes
 // and quotes.
 // Consider the command-line argument: q\"bs1\bs2\\bs3q\\\"
 // Here it is with C-style escapes.
 static const CommandLine::StringType kTrickyQuoted =
     FILE_PATH_LITERAL("q\\\"bs1\\bs2\\\\bs3q\\\\\\\"");
@@ skipping 329 matching lines @@
 }
 #endif
 
 // Calling Init multiple times should not modify the previous CommandLine.
 TEST(CommandLineTest, Init) {
   CommandLine* initial = CommandLine::ForCurrentProcess();
   EXPECT_FALSE(CommandLine::Init(0, NULL));
   CommandLine* current = CommandLine::ForCurrentProcess();
   EXPECT_EQ(initial, current);
 }