Introduce PrefRegistrySyncable, simplifying PrefServiceSyncable.

ui/shell_dialogs/select_file_dialog.h

Index: ui/shell_dialogs/select_file_dialog.h
diff --git a/ui/shell_dialogs/select_file_dialog.h b/ui/shell_dialogs/select_file_dialog.h
index 60b24621f6cd9f416eca58c4e2babf042f432dc7..b52642b03b680e748d685378632bcbe361f92848 100644
--- a/ui/shell_dialogs/select_file_dialog.h
+++ b/ui/shell_dialogs/select_file_dialog.h
@@ -106,7 +106,7 @@ class SHELL_DIALOGS_EXPORT SelectFileDialog
     //
     // Only pass more than one extension in the inner vector if the extensions
     // are equivalent. Do NOT include leading periods.
-    std::vector<std::vector<FilePath::StringType> > extensions;
+    std::vector<std::vector<base::FilePath::StringType> > extensions;

[Mattias Nissler (ping if slow), 2013/02/06 17:53:33]

unrelated changes?

[Jói, 2013/02/07 14:52:32]

Yes, as in pref_member.h. Removed.

 
     // Overrides the system descriptions of the specified extensions. Entries
     // correspond to |extensions|; if left blank the system descriptions will
@@ -153,7 +153,7 @@ class SHELL_DIALOGS_EXPORT SelectFileDialog
                   const FilePath& default_path,
                   const FileTypeInfo* file_types,
                   int file_type_index,
-                  const FilePath::StringType& default_extension,
+                  const base::FilePath::StringType& default_extension,
                   gfx::NativeWindow owning_window,
                   void* params);
   bool HasMultipleFileTypeChoices();
@@ -171,14 +171,15 @@ class SHELL_DIALOGS_EXPORT SelectFileDialog
   // This is overridden in the platform-specific descendants of FileSelectDialog
   // and gets called from SelectFile after testing the
   // AllowFileSelectionDialogs-Policy.
-  virtual void SelectFileImpl(Type type,
-                              const string16& title,
-                              const FilePath& default_path,
-                              const FileTypeInfo* file_types,
-                              int file_type_index,
-                              const FilePath::StringType& default_extension,
-                              gfx::NativeWindow owning_window,
-                              void* params) = 0;
+  virtual void SelectFileImpl(
+      Type type,
+      const string16& title,
+      const FilePath& default_path,
+      const FileTypeInfo* file_types,
+      int file_type_index,
+      const base::FilePath::StringType& default_extension,
+      gfx::NativeWindow owning_window,
+      void* params) = 0;
 
   // Returns the global ShellDialogsDelegate instance if any.
   ShellDialogsDelegate* GetShellDialogsDelegate();