Make infobars ignore button clicks when closing.

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

Index: chrome/browser/ui/gtk/infobars/after_translate_infobar_gtk.cc
===================================================================
--- chrome/browser/ui/gtk/infobars/after_translate_infobar_gtk.cc	(revision 102206)
+++ chrome/browser/ui/gtk/infobars/after_translate_infobar_gtk.cc	(working copy)
@@ -62,7 +62,7 @@
 
   GtkWidget* button = gtk_button_new_with_label(
       l10n_util::GetStringUTF8(IDS_TRANSLATE_INFOBAR_REVERT).c_str());
-  g_signal_connect(button, "clicked",G_CALLBACK(&OnRevertPressedThunk), this);
+  g_signal_connect(button, "clicked", G_CALLBACK(&OnRevertPressedThunk), this);
   gtk_box_pack_start(GTK_BOX(hbox), button, FALSE, FALSE, 0);
 }
 
@@ -71,6 +71,8 @@
 }
 
 void AfterTranslateInfoBar::OnOriginalLanguageModified(GtkWidget* sender) {
+  if (!owned())
+    return;  // We're closing; don't call anything, it might access the owner.
   size_t index = GetLanguageComboboxActiveId(GTK_COMBO_BOX(sender));
   if (index == GetDelegate()->original_language_index())
     return;
@@ -83,6 +85,8 @@
 }
 
 void AfterTranslateInfoBar::OnTargetLanguageModified(GtkWidget* sender) {
+  if (!owned())
+    return;  // We're closing; don't call anything, it might access the owner.
   size_t index = GetLanguageComboboxActiveId(GTK_COMBO_BOX(sender));
   if (index == GetDelegate()->target_language_index())
     return;
@@ -93,13 +97,19 @@
 }
 
 void AfterTranslateInfoBar::OnRevertPressed(GtkWidget* sender) {
+  if (!owned())
+    return;  // We're closing; don't call anything, it might access the owner.
   GetDelegate()->RevertTranslation();
 }
 
 void AfterTranslateInfoBar::SetOriginalLanguage(size_t language_index) {
+  if (!owned())
+    return;  // We're closing; don't call anything, it might access the owner.
   GetDelegate()->SetOriginalLanguage(language_index);
 }
 
 void AfterTranslateInfoBar::SetTargetLanguage(size_t language_index) {
+  if (!owned())
+    return;  // We're closing; don't call anything, it might access the owner.
   GetDelegate()->SetTargetLanguage(language_index);
 }