Session-only local storage cleared on exit.

webkit/quota/mock_special_storage_policy.cc

Index: webkit/quota/mock_special_storage_policy.cc
diff --git a/webkit/quota/mock_special_storage_policy.cc b/webkit/quota/mock_special_storage_policy.cc
index 8b750730c049881db67aa5fc5f9fe1862f77b561..5787be9cbca8a13bcfce4d43d18ab41a91f3e7fe 100644
--- a/webkit/quota/mock_special_storage_policy.cc
+++ b/webkit/quota/mock_special_storage_policy.cc
@@ -21,6 +21,10 @@ bool MockSpecialStoragePolicy::IsStorageUnlimited(const GURL& origin) {
   return unlimited_.find(origin) != unlimited_.end();
 }
 
+bool MockSpecialStoragePolicy::IsStorageSessionOnly(const GURL& origin) {
+  return session_only_.find(origin) != session_only_.end();
+}
+
 bool MockSpecialStoragePolicy::IsFileHandler(const std::string& extension_id) {
   return file_handlers_.find(extension_id) != file_handlers_.end();
 }