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..eb4b50e823ea33ea0ffcfce9d64a6c123d9049e0
--- /dev/null
+++ b/athena/wm/public/window_list_provider.h
@@ -0,0 +1,25 @@
+#ifndef ATHENA_WM_PUBLIC_WINDOW_LIST_PROVIDER_H_
+#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:
+  static WindowListProvider* Create();
+  static WindowListProvider* GetInstance();

[oshima, 2014/08/08 16:45:34]

remove them?

[mfomitchev, 2014/08/08 17:40:50]

Oops

+
+  virtual ~WindowListProvider() {}
+
+  // Returns an ordered list of windows.
+  virtual aura::Window::Windows GetWindowList() const = 0;
+  // Moves the window to the front of the list.

[oshima, 2014/08/08 16:45:34]

new line before the comment

[mfomitchev, 2014/08/08 17:40:51]

Done.

+  virtual void MoveToFront(aura::Window* window) = 0;
+};
+
+}  // namespace wm
+
+#endif  // ATHENA_WM_PUBLIC_WINDOW_LIST_PROVIDER_H_