Make infobars ignore button clicks when closing.

chrome/browser/ui/gtk/infobars/infobar_gtk.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/gtk/infobars/infobar_gtk.h"
 
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/ui/gtk/browser_window_gtk.h"
 #include "chrome/browser/ui/gtk/custom_button.h"
 #include "chrome/browser/ui/gtk/gtk_chrome_link_button.h"
@@ skipping 166 matching lines @@
   *r = SkColorGetR(color) / 255.0;
   *g = SkColorGetG(color) / 255.0;
   *b = SkColorGetB(color) / 255.0;
 }
 
 void InfoBarGtk::UpdateBorderColor() {
   gtk_widget_queue_draw(widget());
 }
 
 void InfoBarGtk::OnCloseButton(GtkWidget* button) {
-  // If we're not owned, we're already closing, so don't call
-  // InfoBarDismissed(), since this can lead to us double-recording dismissals.
-  if (delegate() && owned())
-    delegate()->InfoBarDismissed();
+  if (!owned())
+    return;  // We're closing; don't call anything, it might access the owner.
+  delegate()->InfoBarDismissed();
   RemoveSelf();
 }
 
 gboolean InfoBarGtk::OnBackgroundExpose(GtkWidget* sender,
                                         GdkEventExpose* event) {
   const int height = sender->allocation.height;
 
   cairo_t* cr = gdk_cairo_create(GDK_DRAWABLE(sender->window));
   gdk_cairo_rectangle(cr, &event->area);
   cairo_clip(cr);
@@ skipping 55 matching lines @@
                          const NotificationSource& source,
                          const NotificationDetails& details) {
   UpdateBorderColor();
 }
 
 void InfoBarGtk::OnChildSizeRequest(GtkWidget* expanded,
                                     GtkWidget* child,
                                     GtkRequisition* requisition) {
   requisition->height = -1;
 }