Remove DialogDelegate::UseNewStyle and unused code.

chrome/browser/ui/views/pdf_password_dialog.cc

 // 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.
 
 #include "chrome/browser/ui/pdf/pdf_tab_helper.h"
 
 #include "chrome/browser/ui/views/constrained_window_views.h"
 #include "components/web_modal/web_contents_modal_dialog_host.h"
 #include "components/web_modal/web_contents_modal_dialog_manager.h"
 #include "components/web_modal/web_contents_modal_dialog_manager_delegate.h"
 #include "content/public/browser/web_contents.h"
-#include "content/public/browser/web_contents_view.h"
 #include "grit/generated_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/views/controls/message_box_view.h"
 #include "ui/views/controls/textfield/textfield.h"
 #include "ui/views/layout/layout_constants.h"
 #include "ui/views/widget/widget.h"
 #include "ui/views/window/dialog_delegate.h"
 
 namespace {
 
@@ skipping 48 matching lines @@
   init_params.inter_row_vertical_spacing =
       views::kUnrelatedControlVerticalSpacing;
   message_box_view_ = new views::MessageBoxView(init_params);
 
   message_box_view_->text_box()->SetObscured(true);
 
   web_modal::WebContentsModalDialogManager* web_contents_modal_dialog_manager =
       web_modal::WebContentsModalDialogManager::FromWebContents(web_contents);
   web_modal::WebContentsModalDialogManagerDelegate* modal_delegate =
       web_contents_modal_dialog_manager->delegate();
-  DCHECK(modal_delegate);

[sky, 2013/11/16 03:03:16]

and here

[msw, 2013/11/16 04:15:44]

Done.

   dialog_ = views::Widget::CreateWindowAsFramelessChild(
-      this,
-      web_contents->GetView()->GetNativeView(),
-      modal_delegate->GetWebContentsModalDialogHost()->GetHostView());
+      this, modal_delegate->GetWebContentsModalDialogHost()->GetHostView());
   web_contents_modal_dialog_manager->ShowDialog(dialog_->GetNativeView());
 }
 
 PDFPasswordDialogViews::~PDFPasswordDialogViews() {
   if (!callback_.is_null()) {
     // This dialog was torn down without either OK or cancel being clicked; be
     // considerate and at least do the callback.
     callback_.Run(false, base::string16());
   }
 }
@@ skipping 64 matching lines @@
 #endif
 }
 
 }  // namespace
 
 void ShowPDFPasswordDialog(content::WebContents* web_contents,
                            const base::string16& prompt,
                            const PasswordDialogClosedCallback& callback) {
   new PDFPasswordDialogViews(web_contents, prompt, callback);
 }