chrome: Cleanup class/struct forward declarations

chrome/browser/ui/cocoa/autofill/password_generation_popup_view_bridge.h

 // Copyright 2014 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_AUTOFILL_PASSWORD_GENERATION_POPUP_VIEW_BRIDGE_H_
 #define CHROME_BROWSER_UI_COCOA_AUTOFILL_PASSWORD_GENERATION_POPUP_VIEW_BRIDGE_H_
 
 #include <vector>
 
 #include "base/compiler_specific.h"
 #include "base/mac/scoped_nsobject.h"
 #include "base/macros.h"
 #include "chrome/browser/ui/autofill/password_generation_popup_view.h"
 
 @class PasswordGenerationPopupViewCocoa;
 
 namespace autofill {
 
-class AutofillPopupController;
-
 // Mac implementation for PasswordGenerationPopupView interface.
 // Serves as a bridge to an instance of the Objective-C class which actually
 // implements the view.
 class PasswordGenerationPopupViewBridge : public PasswordGenerationPopupView {
  public:
   explicit PasswordGenerationPopupViewBridge(
       PasswordGenerationPopupController* controller);
 
  private:
   virtual ~PasswordGenerationPopupViewBridge();
 
   // PasswordGenerationPopupView implementation.
   void Hide() override;
   void Show() override;
   gfx::Size GetPreferredSizeOfPasswordView() override;
   void UpdateBoundsAndRedrawPopup() override;
   void PasswordSelectionUpdated() override;
   bool IsPointInPasswordBounds(const gfx::Point& point) override;
 
   // The native Cocoa view.
   base::scoped_nsobject<PasswordGenerationPopupViewCocoa> view_;
 
   DISALLOW_COPY_AND_ASSIGN(PasswordGenerationPopupViewBridge);
 };
 
 }  // namespace autofill
 
 #endif  // CHROME_BROWSER_UI_COCOA_AUTOFILL_PASSWORD_GENERATION_POPUP_VIEW_BRIDGE_H_