Sanitize PrefStore interface.

chrome/browser/extensions/extension_prefs.h

Index: chrome/browser/extensions/extension_prefs.h
diff --git a/chrome/browser/extensions/extension_prefs.h b/chrome/browser/extensions/extension_prefs.h
index b0f03f5a28ecb87b7f6934b5801b8202fe99a25f..8c8be82e15eb3db056902a833e593fe705c2bad3 100644
--- a/chrome/browser/extensions/extension_prefs.h
+++ b/chrome/browser/extensions/extension_prefs.h
@@ -16,6 +16,8 @@
 #include "chrome/common/extensions/extension.h"
 #include "googleurl/src/gurl.h"
 
+class ExtensionPrefStore;
+
 // Class for managing global and per-extension preferences.
 //
 // This class distinguishes the following kinds of preferences:
@@ -57,7 +59,9 @@ class ExtensionPrefs {
     LAUNCH_WINDOW
   };
 
-  explicit ExtensionPrefs(PrefService* prefs, const FilePath& root_dir);
+  explicit ExtensionPrefs(PrefService* prefs,
+                          const FilePath& root_dir,
+                          ExtensionPrefStore* extension_pref_store);
   ~ExtensionPrefs();
 
   // Returns a copy of the Extensions prefs.
@@ -387,6 +391,9 @@ class ExtensionPrefs {
   // Base extensions install directory.
   FilePath install_directory_;
 
+  // Used to manipulate extension preferences.
+  ExtensionPrefStore* pref_store_;
+
   // The URLs of all of the toolstrips.
   URLList shelf_order_;