Fix a couple of firefox search engine import bugs.

chrome/browser/importer/firefox_importer_utils.h

 // Copyright (c) 2010 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.
 
 #ifndef CHROME_BROWSER_IMPORTER_FIREFOX_IMPORTER_UTILS_H_
 #define CHROME_BROWSER_IMPORTER_FIREFOX_IMPORTER_UTILS_H_
 #pragma once
 
+#include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "build/build_config.h"
 
 class DictionaryValue;
 class FilePath;
 class GURL;
 class TemplateURL;
 
@@ skipping 69 matching lines @@
 bool IsDefaultHomepage(const GURL& homepage, const FilePath& app_path);
 
 // Parses the prefs found in the file |pref_file| and puts the key/value pairs
 // in |prefs|. Keys are strings, and values can be strings, booleans or
 // integers.  Returns true if it succeeded, false otherwise (in which case
 // |prefs| is not filled).
 // Note: for strings, only valid UTF-8 string values are supported.  If a
 // key/pair is not valid UTF-8, it is ignored and will not appear in |prefs|.
 bool ParsePrefFile(const FilePath& pref_file, DictionaryValue* prefs);
 
+// Parses the value of a particular firefox preference from a string that is
+// the contents of the prefs file.
+std::string GetPrefsJsValue(const std::string& prefs,
+                            const std::string& pref_key);
+
 #endif  // CHROME_BROWSER_IMPORTER_FIREFOX_IMPORTER_UTILS_H_