chrome: Cleanup class/struct forward declarations

chrome/browser/ui/startup/startup_browser_creator_impl.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_STARTUP_STARTUP_BROWSER_CREATOR_IMPL_H_
 #define CHROME_BROWSER_UI_STARTUP_STARTUP_BROWSER_CREATOR_IMPL_H_
 
 #include <string>
 #include <vector>
 
 #include "base/files/file_path.h"
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
 #include "chrome/browser/ui/startup/startup_tab.h"
 #include "chrome/browser/ui/startup/startup_tab_provider.h"
 #include "chrome/browser/ui/startup/startup_types.h"
 #include "url/gurl.h"
 
 class Browser;
 class Profile;
 class StartupBrowserCreator;
 
 namespace base {
 class CommandLine;
 class FilePath;
 }
 
-namespace content {
-class WebContents;
-}
-
 namespace internals {
 GURL GetTriggeredResetSettingsURL();
 GURL GetWelcomePageURL();
 }  // namespace internals
 
 // Assists launching the application and appending the initial tabs for a
 // browser window.
 class StartupBrowserCreatorImpl {
  public:
   // There are two ctors. The first one implies a NULL browser_creator object
@@ skipping 186 matching lines @@
   const base::FilePath cur_dir_;
   const base::CommandLine& command_line_;
   Profile* profile_;
   StartupBrowserCreator* browser_creator_;
   bool is_first_run_;
   WelcomeRunType welcome_run_type_;
   DISALLOW_COPY_AND_ASSIGN(StartupBrowserCreatorImpl);
 };
 
 #endif  // CHROME_BROWSER_UI_STARTUP_STARTUP_BROWSER_CREATOR_IMPL_H_