Add FilePath setter/getter to pref service....

chrome/common/pref_service.h

Index: chrome/common/pref_service.h
===================================================================
--- chrome/common/pref_service.h	(revision 10837)
+++ chrome/common/pref_service.h	(working copy)
@@ -17,6 +17,7 @@
 
 #include <set>
 
+#include "base/file_path.h"
 #include "base/hash_tables.h"
 #include "base/non_thread_safe.h"
 #include "base/observer_list.h"
@@ -76,7 +77,7 @@
   };
 
   // |pref_filename| is the path to the prefs file we will try to load or save to.
-  explicit PrefService(const std::wstring& pref_filename);
+  explicit PrefService(const FilePath& pref_filename);
   ~PrefService();
 
   // Reloads the data from file. This should only be called when the importer
@@ -108,6 +109,8 @@
                         double default_value);
   void RegisterStringPref(const wchar_t* path,
                           const std::wstring& default_value);
+  void RegisterFilePathPref(const wchar_t* path,
+                            const FilePath& default_value);
   void RegisterListPref(const wchar_t* path);
   void RegisterDictionaryPref(const wchar_t* path);
 
@@ -131,6 +134,7 @@
   int GetInteger(const wchar_t* path) const;
   double GetReal(const wchar_t* path) const;
   std::wstring GetString(const wchar_t* path) const;
+  FilePath GetFilePath(const wchar_t* path) const;
 
   // Returns the branch if it exists.  If it's not a branch or the branch does
   // not exist, returns NULL.  This does
@@ -150,6 +154,7 @@
   void SetInteger(const wchar_t* path, int value);
   void SetReal(const wchar_t* path, double value);
   void SetString(const wchar_t* path, const std::wstring& value);
+  void SetFilePath(const wchar_t* path, const FilePath& value);
 
   // Used to set the value of dictionary or list values in the pref tree.  This
   // will create a dictionary or list if one does not exist in the pref tree.
@@ -196,7 +201,7 @@
   PrefService();
 
   // Reads the data from the given file, returning true on success.
-  bool LoadPersistentPrefs(const std::wstring& file_path);
+  bool LoadPersistentPrefs(const FilePath& file_path);
 
   // Add a preference to the PreferenceMap.  If the pref already exists, return
   // false.  This method takes ownership of |pref|.
@@ -218,7 +223,7 @@
   scoped_ptr<DictionaryValue> transient_;
 
   // The filename that we're loading/saving the prefs to.
-  std::wstring pref_filename_;
+  FilePath pref_filename_;
 
   // Task used by ScheduleSavePersistentPrefs to avoid lots of little saves.
   ScopedRunnableMethodFactory<PrefService> save_preferences_factory_;