Session-only local storage cleared on exit.

content/browser/in_process_webkit/dom_storage_context.h

Index: content/browser/in_process_webkit/dom_storage_context.h
diff --git a/content/browser/in_process_webkit/dom_storage_context.h b/content/browser/in_process_webkit/dom_storage_context.h
index 4b5e639f05a16a89631e47de4465c5d8afe9928a..65c58c720282f58439a82c1ec8d3a0b5eb407193 100644
--- a/content/browser/in_process_webkit/dom_storage_context.h
+++ b/content/browser/in_process_webkit/dom_storage_context.h
@@ -80,6 +80,11 @@ class DOMStorageContext {
   // are not deleted by this method.
   void DeleteDataModifiedSince(const base::Time& cutoff);
 
+  // Delete any local storage files which are allowed to be stored only until
+  // the end of the session. Protected origins, per the SpecialStoragePolicy,
+  // are not deleted by this method.
+  void DeleteSessionOnlyData();
+
   // Deletes a single local storage file.
   void DeleteLocalStorageFile(const FilePath& file_path);