Reorder browser list on workspace switch

ui/display/desktop_observer.h

Index: ui/display/desktop_observer.h
diff --git a/ui/display/desktop_observer.h b/ui/display/desktop_observer.h
new file mode 100644
index 0000000000000000000000000000000000000000..29a471d6be51832d144b52dc50481db77d3e4ee3
--- /dev/null
+++ b/ui/display/desktop_observer.h
@@ -0,0 +1,34 @@
+// Copyright 2016 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 UI_DISPLAY_DESKTOP_OBSERVER_H_
+#define UI_DISPLAY_DESKTOP_OBSERVER_H_
+
+#include <string>
+
+#include "base/observer_list.h"

[Lei Zhang, 2016/06/29 20:51:01]

Move to .cc

[Tom (Use chromium acct), 2016/06/29 21:12:50]

Done.

+#include "ui/display/display_export.h"
+
+namespace display {
+
+namespace desktop {
+
+// Observers for desktop configuration changes.
+class DISPLAY_EXPORT DesktopObserver {
+ public:
+  virtual void OnWorkspaceChanged(const std::string& new_workspace) = 0;

[Lei Zhang, 2016/06/29 20:51:01]

Please describe what the method(s) do.

[Tom (Use chromium acct), 2016/06/29 21:12:50]

Done.

+
+ protected:
+  virtual ~DesktopObserver();
+};
+
+DISPLAY_EXPORT void AddObserver(DesktopObserver* observer);
+DISPLAY_EXPORT void RemoveObserver(DesktopObserver* observer);
+DISPLAY_EXPORT void OnWorkspaceChanged(const std::string& new_workspace);
+
+}  // namespace display
+
+}  // namespace desktop
+
+#endif  // UI_DISPLAY_DESKTOP_OBSERVER_H_