Make docked panel always on top for Linux

chrome/browser/ui/gtk/panels/panel_gtk.cc

Index: chrome/browser/ui/gtk/panels/panel_gtk.cc
diff --git a/chrome/browser/ui/gtk/panels/panel_gtk.cc b/chrome/browser/ui/gtk/panels/panel_gtk.cc
index 8118748bdcf33b2eec67e8dc7c3fce646c29be54..6e8ded67f81a154aaba69bd10a8ca9c39d3ab65c 100644
--- a/chrome/browser/ui/gtk/panels/panel_gtk.cc
+++ b/chrome/browser/ui/gtk/panels/panel_gtk.cc
@@ -316,6 +316,7 @@ void PanelGtk::Init() {
   gtk_widget_show(window_container_);
 
   ConnectAccelerators();
+  SetPanelAlwaysOnTop(always_on_top_);
 }
 
 void PanelGtk::SetWindowCornerStyle(panel::CornerStyle corner_style) {
@@ -1006,8 +1007,6 @@ bool PanelGtk::IsPanelAlwaysOnTop() const {
 }
 
 void PanelGtk::SetPanelAlwaysOnTop(bool on_top) {
-  if (always_on_top_ == on_top)
-    return;
   always_on_top_ = on_top;
 
   gtk_window_set_keep_above(window_, on_top);