components: Create web_modal component.

chrome/browser/ui/web_contents_modal_dialog_manager_delegate.h

-// Copyright (c) 2012 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_WEB_CONTENTS_MODAL_DIALOG_MANAGER_DELEGATE_H_
-#define CHROME_BROWSER_UI_WEB_CONTENTS_MODAL_DIALOG_MANAGER_DELEGATE_H_
-
-class WebContentsModalDialogHost;
-
-namespace content {
-class WebContents;
-}
-
-namespace gfx {
-class Point;
-}
-
-class WebContentsModalDialogManagerDelegate {
- public:
-  // Changes the blocked state of |web_contents|. WebContentses are considered
-  // blocked while displaying a web contents modal dialog. During that time
-  // renderer host will ignore any UI interaction within WebContents outside of
-  // the currently displaying dialog.
-  virtual void SetWebContentsBlocked(content::WebContents* web_contents,
-                                     bool blocked);
-
-  // Returns the WebContentsModalDialogHost for use in positioning web contents
-  // modal dialogs within the browser window.
-  virtual WebContentsModalDialogHost* GetWebContentsModalDialogHost();
-
- protected:
-  virtual ~WebContentsModalDialogManagerDelegate();
-};
-
-#endif  // CHROME_BROWSER_UI_WEB_CONTENTS_MODAL_DIALOG_MANAGER_DELEGATE_H_