Minimized panels should not open on Windows when activated by the OS

chrome/browser/ui/panels/panel_browser_window_gtk.cc

Index: chrome/browser/ui/panels/panel_browser_window_gtk.cc
diff --git a/chrome/browser/ui/panels/panel_browser_window_gtk.cc b/chrome/browser/ui/panels/panel_browser_window_gtk.cc
index f84b84fdcff9c8eb8ea2f7d482ee62665782d5e7..ddce6f9e0a052e074762a604959dd75a6aaff956 100644
--- a/chrome/browser/ui/panels/panel_browser_window_gtk.cc
+++ b/chrome/browser/ui/panels/panel_browser_window_gtk.cc
@@ -97,10 +97,6 @@ void PanelBrowserWindowGtk::Init() {
   ui::WorkAreaWatcherX::AddObserver(this);
   registrar_.Add(
       this,
-      chrome::NOTIFICATION_PANEL_CHANGED_EXPANSION_STATE,
-      content::Source<Panel>(panel_.get()));
-  registrar_.Add(
-      this,
       chrome::NOTIFICATION_PANEL_CHANGED_LAYOUT_MODE,
       content::Source<Panel>(panel_.get()));
   registrar_.Add(
@@ -275,9 +271,6 @@ void PanelBrowserWindowGtk::Observe(
   switch (type) {
     case chrome::NOTIFICATION_PANEL_CHANGED_LAYOUT_MODE:
       titlebar()->UpdateCustomFrame(true);
-      // No break. Accept focus code should execute for both cases.
-    case chrome::NOTIFICATION_PANEL_CHANGED_EXPANSION_STATE:
-      gtk_window_set_accept_focus(window(), !panel_->IsMinimized());
       break;
     case chrome::NOTIFICATION_WINDOW_CLOSED:
       // Cleanup.
@@ -387,6 +380,11 @@ bool PanelBrowserWindowGtk::IsPanelActive() const {
   return IsActive();
 }
 
+void PanelBrowserWindowGtk::PreventActivationByOS(bool prevent_activation) {
+  gtk_window_set_accept_focus(window(), !prevent_activation);
+  return;
+}
+
 gfx::NativeWindow PanelBrowserWindowGtk::GetNativePanelHandle() {
   return GetNativeHandle();
 }