Make panels not show on top when there is an app running in full screen mode.

chrome/browser/ui/panels/panel_strip.cc

Index: chrome/browser/ui/panels/panel_strip.cc
diff --git a/chrome/browser/ui/panels/panel_strip.cc b/chrome/browser/ui/panels/panel_strip.cc
index 27e8878c9e66528955b68420c1299e1f5a26e8ca..e94c1575008af4e0f8e288867aa06034d3b191f1 100644
--- a/chrome/browser/ui/panels/panel_strip.cc
+++ b/chrome/browser/ui/panels/panel_strip.cc
@@ -559,6 +559,11 @@ void PanelStrip::OnAutoHidingDesktopBarVisibilityChanged(
   delayed_titlebar_action_ = NO_ACTION;
 }
 
+void PanelStrip::OnFullScreenModeChanged(bool is_full_screen) {
+  for (size_t i = 0; i < panels_.size(); ++i)
+    panels_[i]->FullScreenModeChanged(is_full_screen);
+}
+
 void PanelStrip::Rearrange() {
   int rightmost_position = StartingRightPosition();