views: Make sure the bubble-delegate removes itself from the anchor-widget's observer list.

ui/views/widget/widget_unittest.cc

 // Copyright (c) 2012 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 "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/gfx/point.h"
+#include "ui/views/bubble/bubble_delegate.h"
 #include "ui/views/test/test_views_delegate.h"
 #include "ui/views/test/views_test_base.h"
 #include "ui/views/views_delegate.h"
 #include "ui/views/widget/native_widget_delegate.h"
 
 #if defined(USE_AURA)
 #include "ui/aura/window.h"
 #include "ui/views/widget/native_widget_aura.h"
 #elif defined(OS_WIN)
 #include "ui/views/widget/native_widget_win.h"
@@ skipping 710 matching lines @@
 
   child1->Show();
   EXPECT_EQ(child1, widget_shown());
 
   child2->Show();
   EXPECT_EQ(child2, widget_shown());
 
   toplevel->CloseNow();
 }
 
+TEST_F(WidgetObserverTest, DestroyBubble) {
+  Widget* anchor = CreateTopLevelPlatformWidget();
+  View* view = new View;
+  anchor->SetContentsView(view);
+  anchor->Show();
+
+  BubbleDelegateView* bubble_delegate =
+      new BubbleDelegateView(view, BubbleBorder::NONE);
+  Widget* bubble_widget(BubbleDelegateView::CreateBubble(bubble_delegate));
+  bubble_widget->Show();
+  bubble_widget->CloseNow();
+
+  anchor->Hide();
+  anchor->CloseNow();
+}
+
 #if !defined(USE_AURA) && defined(OS_WIN)
 // Aura needs shell to maximize/fullscreen window.
 // NativeWidgetGtk doesn't implement GetRestoredBounds.
 TEST_F(WidgetTest, GetRestoredBounds) {
   Widget* toplevel = CreateTopLevelPlatformWidget();
   EXPECT_EQ(toplevel->GetWindowScreenBounds().ToString(),
             toplevel->GetRestoredBounds().ToString());
   toplevel->Show();
   toplevel->Maximize();
   RunPendingMessages();
@@ skipping 51 matching lines @@
   // And it stays maximized after getting out of full screen.
   EXPECT_EQ(ui::SHOW_STATE_MAXIMIZED, GetWidgetShowState(toplevel));
 
   // Clean up.
   toplevel->Close();
   RunPendingMessages();
 }
 
 }  // namespace
 }  // namespace views