Avoid multiple displays of the sign-in dialogs.

chrome/browser/ui/views/profiles/signin_view_controller_delegate_views.h

 // Copyright 2016 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.
 
 #ifndef CHROME_BROWSER_UI_VIEWS_PROFILES_SIGNIN_VIEW_CONTROLLER_DELEGATE_VIEWS_H_
 #define CHROME_BROWSER_UI_VIEWS_PROFILES_SIGNIN_VIEW_CONTROLLER_DELEGATE_VIEWS_H_
 
 #include "base/macros.h"
 #include "chrome/browser/ui/profile_chooser_constants.h"
 #include "chrome/browser/ui/signin_view_controller_delegate.h"
@@ skipping 59 matching lines @@
   ~SigninViewControllerDelegateViews() override;
 
   void PerformClose() override;
   void ResizeNativeView(int height) override;
 
   void DisplayModal();
 
   views::WebView* content_view_;
   views::Widget* modal_signin_widget_;  // Not owned.
   ui::ModalType dialog_modal_type_;
-
-  // wait_for_size_ stores whether the dialog should only be shown after its
-  // content's size has been laid out and measured so that the constrained
-  // window is sized to the content.
-  bool wait_for_size_;
   Browser* browser_;
 
   DISALLOW_COPY_AND_ASSIGN(SigninViewControllerDelegateViews);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_PROFILES_SIGNIN_VIEW_CONTROLLER_DELEGATE_VIEWS_H_