Fix crash/leak issue in native_view_host_gtk.cc.

chrome/browser/views/tab_contents/tab_contents_view_gtk.cc

 // Copyright (c) 2009 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/views/tab_contents/tab_contents_view_gtk.h"
 
 #include <gdk/gdk.h>
 #include <gtk/gtk.h>
 
 #include "app/gfx/canvas_paint.h"
@@ skipping 132 matching lines @@
            constrained_window);
   DCHECK(item != constrained_windows_.end());
   RemoveChild((*item)->widget());
   constrained_windows_.erase(item);
 }
 
 void TabContentsViewGtk::CreateView(const gfx::Size& initial_size) {
   set_delete_on_destroy(false);
   WidgetGtk::Init(NULL, gfx::Rect(0, 0, initial_size.width(),
                                   initial_size.height()));
+  // We need to own the widget in order to attach/detach the native view
+  // to container.
+  gtk_object_ref(GTK_OBJECT(GetNativeView()));
 }
 
 RenderWidgetHostView* TabContentsViewGtk::CreateViewForWidget(
     RenderWidgetHost* render_widget_host) {
   if (render_widget_host->view()) {
     // During testing, the view will already be set up in most cases to the
     // test view, so we don't want to clobber it with a real one. To verify that
     // this actually is happening (and somebody isn't accidentally creating the
     // view twice), we check for the RVH Factory, which will be set when we're
     // making special ones (which go along with the special views).
@@ skipping 243 matching lines @@
 // not NULL, else our delegate.
 gboolean TabContentsViewGtk::OnMouseMove(GtkWidget* widget,
                                          GdkEventMotion* event) {
   if (sad_tab_ != NULL)
     WidgetGtk::OnMotionNotify(widget, event);
   else if (tab_contents()->delegate())
     tab_contents()->delegate()->ContentsMouseEvent(
         tab_contents(), views::Screen::GetCursorScreenPoint(), true);
   return FALSE;
 }
-