Remove WebAuthFlowWindow and its implementation on all platforms. We don't need it anymore since we…

chrome/browser/ui/cocoa/extensions/web_auth_flow_window_cocoa.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_COCOA_EXTENSIONS_WEB_AUTH_FLOW_WINDOW_COCOA_H_
-#define CHROME_BROWSER_UI_COCOA_EXTENSIONS_WEB_AUTH_FLOW_WINDOW_COCOA_H_
-
-#import <Cocoa/Cocoa.h>
-
-#include "base/memory/scoped_nsobject.h"
-#include "chrome/browser/ui/extensions/web_auth_flow_window.h"
-
-namespace content {
-class BrowserContext;
-class WebContents;
-}
-
-@class WebAuthFlowWindowController;
-
-// Cocoa bridge to WebAuthFlowWindow.
-class WebAuthFlowWindowCocoa : public WebAuthFlowWindow {
- public:
-  WebAuthFlowWindowCocoa(
-      Delegate* delegate,
-      content::BrowserContext* browser_context,
-      content::WebContents* contents);
-
-  // WebAuthFlowWindow implementation.
-  virtual void Show() OVERRIDE;
-
-  // Called when the window is about to be closed.
-  void WindowWillClose();
-
- private:
-  virtual ~WebAuthFlowWindowCocoa();
-
-  scoped_nsobject<WebAuthFlowWindowController> window_controller_;
-  NSInteger attention_request_id_;  // identifier from requestUserAttention
-
-  DISALLOW_COPY_AND_ASSIGN(WebAuthFlowWindowCocoa);
-};
-
-#endif  // CHROME_BROWSER_UI_COCOA_EXTENSIONS_WEB_AUTH_FLOW_WINDOW_COCOA_H_