Introduce incognito preference settings.

chrome/browser/ui/views/frame/browser_view.cc

 // Copyright (c) 2011 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/ui/views/frame/browser_view.h"
 
 #if defined(OS_LINUX)
 #include <gtk/gtk.h>
 #endif
 
@@ skipping 462 matching lines @@
   // downloads can be destroyed along with |browser_| and the observer
   // notifications will call back into deleted objects).
   download_shelf_.reset();
 
   // The TabStrip attaches a listener to the model. Make sure we shut down the
   // TabStrip first so that it can cleanly remove the listener.
   tabstrip_->GetParent()->RemoveChildView(tabstrip_);
   delete tabstrip_;
   tabstrip_ = NULL;
 
+  // Child views maintain PrefMember attributes that point to
+  // OffTheRecordProfile's PrefService which gets deleted by ~Browser.
+  RemoveAllChildViews(true);
   // Explicitly set browser_ to NULL.
   browser_.reset();
 }
 
 // static
 BrowserView* BrowserView::GetBrowserViewForNativeWindow(
     gfx::NativeWindow window) {
 #if defined(OS_WIN)
   if (IsWindow(window)) {
     return reinterpret_cast<BrowserView*>(
@@ skipping 2057 matching lines @@
       l10n_util::GetStringUTF16(IDS_PRODUCT_NAME));
 
   return view;
 }
 #endif
 
 // static
 FindBar* BrowserWindow::CreateFindBar(Browser* browser) {
   return browser::CreateFindBar(static_cast<BrowserView*>(browser->window()));
 }