Split Screen mode implementation

athena/wm/public/window_list_provider.h

Index: athena/wm/public/window_list_provider.h
diff --git a/athena/wm/public/window_list_provider.h b/athena/wm/public/window_list_provider.h
new file mode 100644
index 0000000000000000000000000000000000000000..e70a39990d69df2c922beca8b6606dcc3d41a038
--- /dev/null
+++ b/athena/wm/public/window_list_provider.h
@@ -0,0 +1,23 @@
+#ifndef ATHENA_WM_PUBLIC_WINDOW_LIST_PROVIDER_H_

[oshima, 2014/08/09 05:07:03]

you need license comment here. Sorry, I missed in the review.

[mfomitchev, 2014/08/09 18:29:56]

Done.

+#define ATHENA_WM_PUBLIC_WINDOW_LIST_PROVIDER_H_
+
+#include "athena/athena_export.h"
+#include "ui/aura/window.h"
+
+namespace athena {
+
+// Interface for an ordered list of aura::Window objects.
+class ATHENA_EXPORT WindowListProvider {
+ public:
+  virtual ~WindowListProvider() {}
+
+  // Returns an ordered list of windows.

[sadrul, 2014/08/09 13:32:40]

Please document the ordering here.

[mfomitchev, 2014/08/09 18:29:56]

My thinking was that this is just an interface and the ordering is up to the
subclass. MryWindowTracker does document the ordering.

+  virtual aura::Window::Windows GetWindowList() const = 0;
+
+  // Moves the window to the front of the list.
+  virtual void MoveToFront(aura::Window* window) = 0;
+};
+
+}  // namespace athena
+
+#endif  // ATHENA_WM_PUBLIC_WINDOW_LIST_PROVIDER_H_