Use a direct include of utf_string_conversions.h in chrome/browser/ui/, part 2.

chrome/browser/ui/views/validation_message_bubble_delegate_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 "chrome/browser/ui/views/validation_message_bubble_delegate.h"
 
-#include "base/utf_string_conversions.h"
+#include "base/strings/utf_string_conversions.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace {
 
 gfx::Size GetSizeForMessages(const std::string& main_text,
                              const std::string& sub_text) {
   ValidationMessageBubbleDelegate delegate(
       gfx::Rect(), UTF8ToUTF16(main_text), UTF8ToUTF16(sub_text), NULL);
   return delegate.GetPreferredSize();
 }
@@ skipping 24 matching lines @@
       " tempor incididunt ut labore et dolore magna aliqua.");
   EXPECT_GT(short_main_long_sub_size.width(),
             short_main_medium_sub_size.width());
   EXPECT_GE(ValidationMessageBubbleDelegate::kWindowMaxWidth,
             short_main_long_sub_size.width());
   EXPECT_GT(short_main_long_sub_size.height(),
             short_main_medium_sub_size.height());
 }
 
 }