Replace WebUI::tab_contents() with web_contents() and switch all users to use web_contents.h inst...

chrome/browser/ui/webui/about_ui.h

 // Copyright (c) 2011 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_WEBUI_ABOUT_UI_H_
 #define CHROME_BROWSER_UI_WEBUI_ABOUT_UI_H_
 #pragma once
 
 #include <string>
 
@@ skipping 27 matching lines @@
  private:
   virtual ~AboutUIHTMLSource();
 
   Profile* profile_;
 
   DISALLOW_COPY_AND_ASSIGN(AboutUIHTMLSource);
 };
 
 class AboutUI : public ChromeWebUI {
  public:
-  explicit AboutUI(TabContents* contents, const std::string& host);
+  explicit AboutUI(content::WebContents* contents, const std::string& host);
   virtual ~AboutUI() {}
 
  private:
   DISALLOW_COPY_AND_ASSIGN(AboutUI);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_ABOUT_UI_H_