Add an OriginFilterBuilder class for [white|black]listing origins.

content/browser/download/download_manager_impl.h

Index: content/browser/download/download_manager_impl.h
diff --git a/content/browser/download/download_manager_impl.h b/content/browser/download/download_manager_impl.h
index edf604f01be5df537e4c9144de034ac01d19c57a..bbd348cdbe8a547a2326c1dacf16169369b7e68a 100644
--- a/content/browser/download/download_manager_impl.h
+++ b/content/browser/download/download_manager_impl.h
@@ -73,11 +73,10 @@ class CONTENT_EXPORT DownloadManagerImpl : public DownloadManager,
       scoped_ptr<ByteStreamReader> stream,
       const DownloadUrlParameters::OnStartedCallback& on_started) override;
 
-  int RemoveDownloadsByOriginAndTime(const url::Origin& origin,
-                                     base::Time remove_begin,
-                                     base::Time remove_end) override;
-  int RemoveDownloadsBetween(base::Time remove_begin,
-                             base::Time remove_end) override;
+  int RemoveDownloadsByURLAndTime(
+      const base::Callback<bool(const GURL&)>& url_filter,
+      base::Time remove_begin,
+      base::Time remove_end) override;
   int RemoveAllDownloads() override;
   void DownloadUrl(scoped_ptr<DownloadUrlParameters> params) override;
   void AddObserver(Observer* observer) override;