Fix panels being removed from PanelManager prematurely.

chrome/browser/ui/panels/panel.cc

Index: chrome/browser/ui/panels/panel.cc
diff --git a/chrome/browser/ui/panels/panel.cc b/chrome/browser/ui/panels/panel.cc
index 976ede4122e03f18b7357222912a1bd484a97781..920cfac041a4cf6276140c180b8fb5ccc49aeb92 100644
--- a/chrome/browser/ui/panels/panel.cc
+++ b/chrome/browser/ui/panels/panel.cc
@@ -47,6 +47,10 @@ Panel::Panel(Browser* browser, const gfx::Rect& bounds)
 
 Panel::~Panel() {
   // Invoked by native panel so do not access native_panel_ here.
+  content::NotificationService::current()->Notify(
+      chrome::NOTIFICATION_PANEL_DELETED,
+      content::Source<Panel>(this),
+      content::NotificationService::NoDetails());
 }
 
 PanelManager* Panel::manager() const {
@@ -173,14 +177,6 @@ void Panel::SetBounds(const gfx::Rect& bounds) {
 // close on the first attempt.
 void Panel::Close() {
   native_panel_->ClosePanel();
-
-// TODO(dimich): Only implemented fully async on Mac. Need to update other
-// platforms. The panel should be removed from PanelManager when and if it
-// was actually closed. The closing can be cancelled because of onbeforeunload
-// handler on the web page. http://crbug.com/102720
-#if !defined(OS_MACOSX)
-  manager()->Remove(this);
-#endif
 }
 
 void Panel::Activate() {