Move ReplaceStringPlaceholders to base namespace.

ui/base/webui/web_ui_util.cc

 // Copyright 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 "ui/base/webui/web_ui_util.h"
 
 #include <vector>
 
 #include "base/base64.h"
 #include "base/i18n/rtl.h"
@@ skipping 112 matching lines @@
   placeholders.push_back(GetTextDirection());  // $1
   placeholders.push_back(GetFontFamily());  // $2
   placeholders.push_back(GetFontSize());  // $3
 
   const ui::ResourceBundle& resource_bundle =
       ui::ResourceBundle::GetSharedInstance();
   const std::string& css_template =
       resource_bundle.GetRawDataResource(IDR_WEBUI_CSS_TEXT_DEFAULTS)
           .as_string();
 
-  return ReplaceStringPlaceholders(css_template, placeholders, nullptr);
+  return base::ReplaceStringPlaceholders(css_template, placeholders, nullptr);
 }
 
 void AppendWebUiCssTextDefaults(std::string* html) {
   html->append("<style>");
   html->append(GetWebUiCssTextDefaults());
   html->append("</style>");
 }
 
 std::string GetFontFamily() {
   std::string font_family = l10n_util::GetStringUTF8(
@@ skipping 20 matching lines @@
           IDS_WEB_FONT_SIZE_XP :
 #endif
           IDS_WEB_FONT_SIZE);
 }
 
 std::string GetTextDirection() {
   return base::i18n::IsRTL() ? "rtl" : "ltr";
 }
 
 }  // namespace webui