chrome: Cleanup class/struct forward declarations

chrome/browser/extensions/startup_helper.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_EXTENSIONS_STARTUP_HELPER_H_
 #define CHROME_BROWSER_EXTENSIONS_STARTUP_HELPER_H_
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "chrome/browser/extensions/pack_extension_job.h"
 
-class Profile;
-
 namespace base {
 class CommandLine;
 }
 
 namespace extensions {
 
 // Initialization helpers for various Extension startup actions.
 class StartupHelper : public PackExtensionJob::Client {
  public:
   StartupHelper();
@@ skipping 17 matching lines @@
  private:
   scoped_refptr<PackExtensionJob> pack_job_;
   bool pack_job_succeeded_;
 
   DISALLOW_COPY_AND_ASSIGN(StartupHelper);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_STARTUP_HELPER_H_