gtk: Two fixes for the tab leak:...

chrome/browser/gtk/tabs/tab_gtk.cc

 // Copyright (c) 2006-2008 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/gtk/tabs/tab_gtk.h"
 
 #include "app/gfx/path.h"
 #include "app/l10n_util.h"
 #include "app/resource_bundle.h"
 #include "chrome/browser/gtk/gtk_dnd_util.h"
@@ skipping 95 matching lines @@
 
 ///////////////////////////////////////////////////////////////////////////////
 // TabGtk, public:
 
 TabGtk::TabGtk(TabDelegate* delegate)
     : TabRendererGtk(delegate->GetThemeProvider()),
       delegate_(delegate),
       closing_(false),
       dragging_(false) {
   event_box_ = gtk_event_box_new();
-  g_object_ref(event_box_);
   gtk_event_box_set_visible_window(GTK_EVENT_BOX(event_box_), FALSE);
   gtk_drag_source_set(event_box_, GDK_BUTTON1_MASK,
                       NULL, 0, GDK_ACTION_MOVE);
   GtkDndUtil::SetSourceTargetListFromCodeMask(event_box_,
                                               GtkDndUtil::CHROME_TAB);
   g_signal_connect(G_OBJECT(event_box_), "button-press-event",
                    G_CALLBACK(OnMousePress), this);
   g_signal_connect(G_OBJECT(event_box_), "button-release-event",
                    G_CALLBACK(OnMouseRelease), this);
   g_signal_connect(G_OBJECT(event_box_), "enter-notify-event",
@@ skipping 16 matching lines @@
 }
 
 TabGtk::~TabGtk() {
   if (menu_controller_.get()) {
     // The menu is showing. Close the menu.
     menu_controller_->Cancel();
 
     // Invoke this so that we hide the highlight.
     ContextMenuClosed();
   }
-
-  gtk_widget_destroy(event_box_);
 }
 
 // static
 gboolean TabGtk::OnMousePress(GtkWidget* widget, GdkEventButton* event,
                               TabGtk* tab) {
   if (event->button == 1) {
     // Store whether or not we were selected just now... we only want to be
     // able to drag foreground tabs, so we don't start dragging the tab if
     // it was in the background.
     bool just_selected = !tab->IsSelected();
@@ skipping 130 matching lines @@
   if (!menu_controller_.get())
     menu_controller_.reset(new ContextMenuController(this));
 
   menu_controller_->RunMenu();
 }
 
 void TabGtk::ContextMenuClosed() {
   delegate()->StopAllHighlighting();
   menu_controller_.reset();
 }