Use mirror layer for minimized windows in overview mode

ash/common/wm/overview/window_selector.cc

Index: ash/common/wm/overview/window_selector.cc
diff --git a/ash/common/wm/overview/window_selector.cc b/ash/common/wm/overview/window_selector.cc
index 49a56dbaf642564cd06b9d4f19397ac2daa5c440..a898f83be197262479b8d85b50bb242ae5237f69 100644
--- a/ash/common/wm/overview/window_selector.cc
+++ b/ash/common/wm/overview/window_selector.cc
@@ -97,7 +97,7 @@ struct WindowSelectorItemTargetComparator {
       : target(target_window) {}
 
   bool operator()(WindowSelectorItem* window) const {
-    return window->GetWindow() == target;
+    return window->Contains(target);
   }
 
   const WmWindow* target;
@@ -567,10 +567,8 @@ void WindowSelector::OnWindowActivated(WmWindow* gained_active,
   auto iter = std::find_if(windows.begin(), windows.end(),
                            WindowSelectorItemTargetComparator(gained_active));
 
-  if (iter != windows.end()) {
-    (*iter)->ShowWindowOnExit();
-  } else if (showing_text_filter_ &&
-             lost_active == GetTextFilterWidgetWindow()) {
+  if (iter == windows.end() && showing_text_filter_ &&
+      lost_active == GetTextFilterWidgetWindow()) {
     return;
   }