Index: chrome/browser/ui/native_window_deletion_observer.h |
diff --git a/chrome/browser/ui/native_window_deletion_observer.h b/chrome/browser/ui/native_window_deletion_observer.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..4b37e464ccbe87694214c9e658d29f5976a291d8 |
--- /dev/null |
+++ b/chrome/browser/ui/native_window_deletion_observer.h |
@@ -0,0 +1,23 @@ |
+// Copyright 2014 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_UI_NATIVE_WINDOW_DELETION_OBSERVER_H_ |
+#define CHROME_BROWSER_UI_NATIVE_WINDOW_DELETION_OBSERVER_H_ |
+ |
+#include "base/memory/scoped_ptr.h" |
+#include "ui/gfx/native_widget_types.h" |
+ |
+// An observer which can be probed for the life of a gfx::NativeWindow. |
+class NativeWindowDeletionObserver { |
sky
2014/10/24 20:22:56
I would be inclined to name this NativeWindowTrack
|
+ public: |
+ static scoped_ptr<NativeWindowDeletionObserver> Create( |
sky
2014/10/24 20:22:56
style guide says constructor/destructor before oth
|
+ gfx::NativeWindow window); |
+ |
+ virtual ~NativeWindowDeletionObserver() {} |
+ |
+ // Returns true if the native window passed to Create() is still alive. |
+ virtual bool IsNativeWindowAlive() const = 0; |
+}; |
+ |
+#endif // CHROME_BROWSER_UI_NATIVE_WINDOW_DELETION_OBSERVER_H_ |