Get rid of the extension's "Current Version" file.

chrome/browser/extensions/extensions_service.h

Index: chrome/browser/extensions/extensions_service.h
diff --git a/chrome/browser/extensions/extensions_service.h b/chrome/browser/extensions/extensions_service.h
index fafe97e9a507dc03bca3230c3f039ad62d3a5244..6a567492f792ac60040a99249737d19b91f8c8ef 100644
--- a/chrome/browser/extensions/extensions_service.h
+++ b/chrome/browser/extensions/extensions_service.h
@@ -303,7 +303,9 @@ class ExtensionsServiceBackend
                                         Extension::Location location);
  private:
   // Loads a single installed extension.
-  void LoadInstalledExtension(const std::string& id, const FilePath& path,
+  void LoadInstalledExtension(DictionaryValue* manifest,
+                              const std::string& id,
+                              const FilePath& path,
                               Extension::Location location);
 
   // Finish installing the extension in |crx_path| after it has been unpacked to