CrOS Tablet Window management - Split Screen part I

ash/wm/maximize_mode/maximize_mode_window_state.h

Index: ash/wm/maximize_mode/maximize_mode_window_state.h
diff --git a/ash/wm/maximize_mode/maximize_mode_window_state.h b/ash/wm/maximize_mode/maximize_mode_window_state.h
index 4ab3d5a2712149ba11213ba2c69f1a9c0c6cc658..e1e9d41516ed8b0ecd6e5863d4bfa9aa18935e30 100644
--- a/ash/wm/maximize_mode/maximize_mode_window_state.h
+++ b/ash/wm/maximize_mode/maximize_mode_window_state.h
@@ -62,6 +62,14 @@ class MaximizeModeWindowState : public wm::WindowState::State {
   wm::WindowStateType GetMaximizedOrCenteredWindowType(
       wm::WindowState* window_state);
 
+  // If |target_state| is LEFT/RIGHT_SNAPPED and the window can be snapped,
+  // return |target_state|. Otherwise depending on the capabilities of the
+  // window we either return |WINDOW_STATE_TYPE_MAXIMIZED| or
+  // |WINDOW_STATE_TYPE_NORMAL|.
+  wm::WindowStateType GetSnappedWindowStateType(
+      wm::WindowState* window_state,
+      wm::WindowStateType target_state);
+
   // Updates the bounds to the maximum possible bounds according to the current
   // window state. If |animated| is set we animate the change.
   void UpdateBounds(wm::WindowState* window_state, bool animated);