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

chrome/browser/themes/browser_theme_pack.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 "chrome/browser/themes/browser_theme_pack.h"
 
 #include <limits>
 
 #include "base/memory/ref_counted_memory.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/stl_util.h"
 #include "base/string_util.h"
 #include "base/strings/string_number_conversions.h"
+#include "base/strings/utf_string_conversions.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "base/threading/thread_restrictions.h"
-#include "base/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/browser/themes/theme_properties.h"
 #include "chrome/common/extensions/manifest_handlers/theme_handler.h"
 #include "content/public/browser/browser_thread.h"
 #include "extensions/common/id_util.h"
 #include "grit/theme_resources.h"
 #include "grit/ui_resources.h"
 #include "net/base/file_stream.h"
 #include "net/base/net_errors.h"
 #include "third_party/skia/include/core/SkCanvas.h"
@@ skipping 1409 matching lines @@
     float scale = static_cast<float>(percent) / 100.0f;
     for (size_t i = 0; i < scale_factors_.size(); ++i) {
       if (fabs(ui::GetScaleFactorScale(scale_factors_[i]) - scale) < 0.001) {
         *scale_factor = scale_factors_[i];
         return true;
       }
     }
   }
   return false;
 }