[MD settings] i18n template replacements in shared HTML resources

ui/base/template_expressions.h

 // Copyright 2015 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.
 
 // This file defines utility functions for replacing template expressions.
 // For example "Hello ${name}" could have ${name} replaced by the user's name.
 
 #ifndef UI_BASE_TEMPLATE_EXPRESSIONS_H_
 #define UI_BASE_TEMPLATE_EXPRESSIONS_H_
 
 #include <map>
 #include <string>
 
 #include "base/strings/string_piece.h"
 #include "ui/base/ui_base_export.h"
 
+namespace base {
+class DictionaryValue;
+}
+
 namespace ui {
 
 // Map of strings for template replacement in |ReplaceTemplateExpressions|.
 typedef std::map<const std::string, std::string> TemplateReplacements;
 
+// Convert a dictionary to a replacement map. This helper function is to assist
+// migration to using TemplateReplacements directly (which is preferred).
+// TODO(dschuyler): remove this function by using TemplateReplacements directly.
+UI_BASE_EXPORT void TemplateReplacementsFromDictionaryValue(
+    const base::DictionaryValue& dictionary,
+    TemplateReplacements* replacements);
+
 // Replace $i18n*{foo} in the format string with the value for the foo key in
 // |subst|.  If the key is not found in the |substitutions| that item will
 // be unaltered.
 UI_BASE_EXPORT std::string ReplaceTemplateExpressions(
     base::StringPiece source,
     const TemplateReplacements& replacements);
 
 }  // namespace ui
 
 #endif  // UI_BASE_TEMPLATE_EXPRESSIONS_H_