Fix Profile* lifetime issues in Chrome's AppListViewDelegate

chrome/browser/ui/app_list/app_list_service_mac.mm

 // Copyright 2013 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.
 
 #import "chrome/browser/ui/app_list/app_list_service_mac.h"
 
 #include <ApplicationServices/ApplicationServices.h>
 #import <Cocoa/Cocoa.h>
 
 #include "base/bind.h"
@@ skipping 434 matching lines @@
   AppListServiceImpl::EnableAppList(initial_profile, enable_source);
   AppController* controller = [NSApp delegate];
   [controller initAppShimMenuController];
 }
 
 void AppListServiceMac::CreateShortcut() {
   CreateAppListShim(GetProfilePath(
       g_browser_process->profile_manager()->user_data_dir()));
 }
 
+void AppListServiceMac::DestroyAppList() {
+  // Due to reference counting, Mac can't guarantee that the widget is deleted,
+  // but mac supports a visible app list with a NULL profile, so there's also no
+  // need to tear it down completely.
+  DismissAppList();
+  [[window_controller_ appListViewController]
+      setDelegate:scoped_ptr<app_list::AppListViewDelegate>()];
+
+  profile_ = NULL;
+}
+
 NSWindow* AppListServiceMac::GetAppListWindow() {
   return [window_controller_ window];
 }
 
 AppListControllerDelegate* AppListServiceMac::GetControllerDelegate() {
   return controller_delegate_.get();
 }
 
 void AppListServiceMac::OnShimLaunch(apps::AppShimHandler::Host* host,
                                      apps::AppShimLaunchType launch_type,
@@ skipping 128 matching lines @@
 
 - (void)animationDidEnd:(NSAnimation*)animation {
   content::BrowserThread::PostTask(
       content::BrowserThread::UI,
       FROM_HERE,
       base::Bind(&AppListServiceMac::WindowAnimationDidEnd,
                  base::Unretained(AppListServiceMac::GetInstance())));
 }
 
 @end