GTK: Stop listening to gtk signals in the omnibox before destroying the model.

chrome/browser/ui/gtk/omnibox/omnibox_popup_view_gtk.cc

Index: chrome/browser/ui/gtk/omnibox/omnibox_popup_view_gtk.cc
diff --git a/chrome/browser/ui/gtk/omnibox/omnibox_popup_view_gtk.cc b/chrome/browser/ui/gtk/omnibox/omnibox_popup_view_gtk.cc
index fcdf76c9dd06337f54da10afc1991c30f92c9b55..82824a2dec1b6ce1193531d402d1454e87141188 100644
--- a/chrome/browser/ui/gtk/omnibox/omnibox_popup_view_gtk.cc
+++ b/chrome/browser/ui/gtk/omnibox/omnibox_popup_view_gtk.cc
@@ -31,6 +31,7 @@
 #include "ui/base/gtk/gtk_compat.h"
 #include "ui/base/gtk/gtk_hig_constants.h"
 #include "ui/base/gtk/gtk_screen_util.h"
+#include "ui/base/gtk/gtk_signal_registrar.h"
 #include "ui/base/gtk/gtk_windowing.h"
 #include "ui/gfx/color_utils.h"
 #include "ui/gfx/font.h"
@@ -276,7 +277,8 @@ OmniboxPopupViewGtk::OmniboxPopupViewGtk(const gfx::Font& font,
                                          OmniboxView* omnibox_view,
                                          AutocompleteEditModel* edit_model,
                                          GtkWidget* location_bar)
-    : model_(new AutocompletePopupModel(this, edit_model)),
+    : signal_registrar_(new ui::GtkSignalRegistrar),
+      model_(new AutocompletePopupModel(this, edit_model)),
       omnibox_view_(omnibox_view),
       location_bar_(location_bar),
       window_(gtk_window_new(GTK_WINDOW_POPUP)),
@@ -306,14 +308,14 @@ OmniboxPopupViewGtk::OmniboxPopupViewGtk(const gfx::Font& font,
                                  GDK_POINTER_MOTION_MASK |
                                  GDK_BUTTON_PRESS_MASK |
                                  GDK_BUTTON_RELEASE_MASK);
-  g_signal_connect(window_, "motion-notify-event",
-                   G_CALLBACK(HandleMotionThunk), this);
-  g_signal_connect(window_, "button-press-event",
-                   G_CALLBACK(HandleButtonPressThunk), this);
-  g_signal_connect(window_, "button-release-event",
-                   G_CALLBACK(HandleButtonReleaseThunk), this);
-  g_signal_connect(window_, "expose-event",
-                   G_CALLBACK(HandleExposeThunk), this);
+  signal_registrar_->Connect(window_, "motion-notify-event",
+                             G_CALLBACK(HandleMotionThunk), this);
+  signal_registrar_->Connect(window_, "button-press-event",
+                             G_CALLBACK(HandleButtonPressThunk), this);
+  signal_registrar_->Connect(window_, "button-release-event",
+                             G_CALLBACK(HandleButtonReleaseThunk), this);
+  signal_registrar_->Connect(window_, "expose-event",
+                             G_CALLBACK(HandleExposeThunk), this);
 
   registrar_.Add(this,
                  chrome::NOTIFICATION_BROWSER_THEME_CHANGED,
@@ -334,6 +336,10 @@ OmniboxPopupViewGtk::OmniboxPopupViewGtk(const gfx::Font& font,
 }
 
 OmniboxPopupViewGtk::~OmniboxPopupViewGtk() {
+  // Stop listening to our signals before we destroy the model. I suspect that
+  // we can race window destruction, otherwise.
+  signal_registrar_.reset();
+
   // Explicitly destroy our model here, before we destroy our GTK widgets.
   // This is because the model destructor can call back into us, and we need
   // to make sure everything is still valid when it does.