Adds WmWindow and converts WindowState to use it

ash/wm/workspace/workspace_window_resizer_unittest.cc

Index: ash/wm/workspace/workspace_window_resizer_unittest.cc
diff --git a/ash/wm/workspace/workspace_window_resizer_unittest.cc b/ash/wm/workspace/workspace_window_resizer_unittest.cc
index bb259c959e1be4f2afdb2ae8ba695f25a3a731d1..a3c644313c2774668562e6e5d42ed16d98d3c203 100644
--- a/ash/wm/workspace/workspace_window_resizer_unittest.cc
+++ b/ash/wm/workspace/workspace_window_resizer_unittest.cc
@@ -13,6 +13,7 @@
 #include "ash/test/ash_test_base.h"
 #include "ash/test/display_manager_test_api.h"
 #include "ash/wm/window_state.h"
+#include "ash/wm/window_state_aura.h"
 #include "ash/wm/window_util.h"
 #include "ash/wm/wm_event.h"
 #include "ash/wm/workspace/phantom_window_controller.h"
@@ -157,8 +158,7 @@ class WorkspaceWindowResizerTest : public test::AshTestBase {
       aura::client::WindowMoveSource source,
       const std::vector<aura::Window*>& attached_windows) {
     wm::WindowState* window_state = wm::GetWindowState(window);
-    window_state->CreateDragDetails(
-        window, point_in_parent, window_component, source);
+    window_state->CreateDragDetails(point_in_parent, window_component, source);
     return WorkspaceWindowResizer::Create(window_state, attached_windows);
   }