[Cleanup] Rename WindowSettings to WindowState

ash/wm/workspace/workspace_event_handler.h

Index: ash/wm/workspace/workspace_event_handler.h
diff --git a/ash/wm/workspace/workspace_event_handler.h b/ash/wm/workspace/workspace_event_handler.h
index f175408c518a7189534bbed1ad6bf82d939c50ce..c761f2bdfe097ec2d1dae193f66fd7f92b4b676f 100644
--- a/ash/wm/workspace/workspace_event_handler.h
+++ b/ash/wm/workspace/workspace_event_handler.h
@@ -13,6 +13,10 @@ class Window;
 }
 
 namespace ash {
+namespace wm {
+class WindowState;
+}
+
 namespace internal {
 
 class WorkspaceEventHandlerTestHelper;
@@ -33,7 +37,7 @@ class WorkspaceEventHandler : public ToplevelWindowEventHandler {
   // bottom vertical resize edge, and if so toggles the vertical height of the
   // window between its restored state and the full available height of the
   // workspace.
-  void HandleVerticalResizeDoubleClick(aura::Window* target,
+  void HandleVerticalResizeDoubleClick(wm::WindowState* window_state,
                                        ui::MouseEvent* event);
 
   MultiWindowResizeController multi_window_resize_controller_;