ash: Change auto to not deduce raw pointers.

ash/common/wm/workspace/workspace_layout_manager.cc

Index: ash/common/wm/workspace/workspace_layout_manager.cc
diff --git a/ash/common/wm/workspace/workspace_layout_manager.cc b/ash/common/wm/workspace/workspace_layout_manager.cc
index b52cc60b21749b762977a61835094cc4726d69f6..78de58d1124feea1bf024025791bbc070994b6db 100644
--- a/ash/common/wm/workspace/workspace_layout_manager.cc
+++ b/ash/common/wm/workspace/workspace_layout_manager.cc
@@ -358,7 +358,7 @@ void WorkspaceLayoutManager::UpdateAlwaysOnTop(WmWindow* window_on_top) {
   // always_on_top containers' layouts are managed by this class all the
   // appropriate windows will be included in the iteration.
   WindowSet windows(windows_);
-  for (auto window : windows) {
+  for (auto* window : windows) {
     wm::WindowState* window_state = window->GetWindowState();
     if (window_on_top)
       window_state->DisableAlwaysOnTop(window_on_top);