AppModalDialogQueue shouldn't depend on views.

chrome/browser/app_modal_dialog_queue.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/app_modal_dialog_queue.h"
 
 #include "chrome/browser/browser_list.h"
 
 // static
-std::queue<views::AppModalDialogDelegate*>*
+std::queue<AppModalDialogDelegate*>*
     AppModalDialogQueue::app_modal_dialog_queue_ = NULL;
-views::AppModalDialogDelegate* AppModalDialogQueue::active_dialog_ = NULL;
+AppModalDialogDelegate* AppModalDialogQueue::active_dialog_ = NULL;
 
 // static
-void AppModalDialogQueue::AddDialog(views::AppModalDialogDelegate* dialog) {
-  DCHECK(dialog->IsModal());
+void AppModalDialogQueue::AddDialog(AppModalDialogDelegate* dialog) {
   if (!app_modal_dialog_queue_) {
-    app_modal_dialog_queue_ = new std::queue<views::AppModalDialogDelegate*>;
+    app_modal_dialog_queue_ = new std::queue<AppModalDialogDelegate*>;
     ShowModalDialog(dialog);
   }
 
   app_modal_dialog_queue_->push(dialog);
 }
 
 // static
 void AppModalDialogQueue::ShowNextDialog() {
   app_modal_dialog_queue_->pop();
   active_dialog_ = NULL;
   if (!app_modal_dialog_queue_->empty()) {
     ShowModalDialog(app_modal_dialog_queue_->front());
   } else {
     delete app_modal_dialog_queue_;
     app_modal_dialog_queue_ = NULL;
   }
 }
 
 // static
 void AppModalDialogQueue::ActivateModalDialog() {
   if (!app_modal_dialog_queue_->empty())
     app_modal_dialog_queue_->front()->ActivateModalDialog();
 }
 
 // static
-void AppModalDialogQueue::ShowModalDialog(
-    views::AppModalDialogDelegate* dialog) {
+void AppModalDialogQueue::ShowModalDialog(AppModalDialogDelegate* dialog) {
   dialog->ShowModalDialog();
   active_dialog_ = dialog;
 }