[Extensions] Remove ExtensionFunction::SetError()

chrome/browser/extensions/api/sessions/sessions_api.cc

Index: chrome/browser/extensions/api/sessions/sessions_api.cc
diff --git a/chrome/browser/extensions/api/sessions/sessions_api.cc b/chrome/browser/extensions/api/sessions/sessions_api.cc
index 2169f4afa31ad84276422f6ff2af29bec4925103..b568021ab6669b17807b76b99a785ab3fd3b2187 100644
--- a/chrome/browser/extensions/api/sessions/sessions_api.cc
+++ b/chrome/browser/extensions/api/sessions/sessions_api.cc
@@ -401,8 +401,8 @@ void SessionsRestoreFunction::SetResultRestoredTab(
 
 bool SessionsRestoreFunction::SetResultRestoredWindow(int window_id) {
   WindowController* controller = NULL;
-  if (!windows_util::GetWindowFromWindowID(this, window_id, 0, &controller)) {
-    // error_ is set by GetWindowFromWindowId function call.
+  if (!windows_util::GetWindowFromWindowID(this, window_id, 0, &controller,
+                                           &error_)) {
     return false;
   }
   std::unique_ptr<base::DictionaryValue> window_value(