Chromium Code Reviews
chromiumcodereview-hr@appspot.gserviceaccount.com (chromiumcodereview-hr) | Please choose your nickname with Settings | Help | Chromium Project | Gerrit Changes | Sign out
(223)

Unified Diff: chrome/browser/sessions/session_restore_observer.h

Issue 2935183002: [TabMetrics] Add signals that mark the start and end of session restore. (Closed)
Patch Set: Enable SessionRestoreObserverTest only when session service available. Created 3 years, 6 months ago
Use n/p to move between diff chunks; N/P to move between comments. Draft comments are only viewable by you.
Jump to:
View side-by-side diff with in-line comments
Download patch
Index: chrome/browser/sessions/session_restore_observer.h
diff --git a/chrome/browser/sessions/session_restore_observer.h b/chrome/browser/sessions/session_restore_observer.h
new file mode 100644
index 0000000000000000000000000000000000000000..8d51103aea6924a021acff267d1725cf3ff09a5c
--- /dev/null
+++ b/chrome/browser/sessions/session_restore_observer.h
@@ -0,0 +1,21 @@
+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_BROWSER_SESSIONS_SESSION_RESTORE_OBSERVER_H_
+#define CHROME_BROWSER_SESSIONS_SESSION_RESTORE_OBSERVER_H_
+
+// Observer of events during session restore.
+class SessionRestoreObserver {
+ public:
+ // OnSessionRestoreStartedLoadingTabs is triggered when the browser starts
+ // loading tabs in session restore.
+ virtual void OnSessionRestoreStartedLoadingTabs() {}
+
+ // OnSessionRestoreFinishedLoadingTabs is triggered when the browser finishes
+ // loading tabs in session restore. In case of memory pressure, not all
+ // WebContents may have been created (i.e., some are deferred).
+ virtual void OnSessionRestoreFinishedLoadingTabs() {}
+};
+
+#endif // CHROME_BROWSER_SESSIONS_SESSION_RESTORE_OBSERVER_H_

Powered by Google App Engine
This is Rietveld 408576698