[Importer] Allow Chrome to import bookmark files without a charset specified.

chrome/utility/importer/bookmark_html_reader.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 "chrome/utility/importer/bookmark_html_reader.h"
 
 #include "base/callback.h"
 #include "base/files/file_util.h"
 #include "base/i18n/icu_string_conversions.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 88 matching lines @@
   std::vector<std::string> lines;
   base::SplitString(content, '\n', &lines);
 
   base::string16 last_folder;
   bool last_folder_on_toolbar = false;
   bool last_folder_is_empty = true;
   bool has_subfolder = false;
   base::Time last_folder_add_date;
   std::vector<base::string16> path;
   size_t toolbar_folder_index = 0;
-  std::string charset;
+  std::string charset = "UTF-8";  // If no charset is specified, assume utf-8.
   for (size_t i = 0;
        i < lines.size() &&
            (cancellation_callback.is_null() || !cancellation_callback.Run());
        ++i) {
     std::string line;
     base::TrimString(lines[i], " ", &line);
 
     // Remove "<HR>" if |line| starts with it. "<HR>" is the bookmark entries
     // separator in Firefox that Chrome does not support. Note that there can be
     // multiple "<HR>" tags at the beginning of a single line.
@@ skipping 349 matching lines @@
       *url = GURL(value);
     }
   }
 
   return true;
 }
 
 }  // namespace internal
 
 }  // namespace bookmark_html_reader