Don't keep file system directories around if they contain unrelated files.

chrome/browser/browsing_data_remover.h

Index: chrome/browser/browsing_data_remover.h
diff --git a/chrome/browser/browsing_data_remover.h b/chrome/browser/browsing_data_remover.h
index a53e5868249557afbff5d01e1e3c45b94f323ac6..3d66f0d1a2a6f5e5f06c1cd9319815318b7c9b3f 100644
--- a/chrome/browser/browsing_data_remover.h
+++ b/chrome/browser/browsing_data_remover.h
@@ -253,7 +253,9 @@ class BrowsingDataRemover : public content::NotificationObserver,
 
   // Callback responding to deletion of a single quota managed origin's
   // persistent data
-  void OnQuotaManagedOriginDeletion(quota::QuotaStatusCode);
+  void OnQuotaManagedOriginDeletion(const GURL& origin,
+                                    quota::StorageType type,
+                                    quota::QuotaStatusCode);
 
   // Called to check whether all temporary and persistent origin data that
   // should be deleted has been deleted. If everything's good to go, invokes