[rAc OSX] Factor out AutofillHeader class to contain dialog header elements.

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

 // Copyright (c) 2013 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_AUTOFILL_DIALOG_COCOA_H_
 #define CHROME_BROWSER_UI_COCOA_AUTOFILL_AUTOFILL_DIALOG_COCOA_H_
 
 #include "base/mac/scoped_nsobject.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/ui/autofill/autofill_dialog_types.h"
 #include "chrome/browser/ui/autofill/autofill_dialog_view.h"
 #include "chrome/browser/ui/autofill/testable_autofill_dialog_view.h"
-#import "chrome/browser/ui/cocoa/autofill/autofill_layout.h"
 #include "chrome/browser/ui/cocoa/constrained_window/constrained_window_mac.h"
 #include "ui/gfx/size.h"
 
 namespace content {
-  class NavigationController;
+class NavigationController;
 }
 
 namespace autofill {
-  class AutofillDialogViewDelegate;
+class AutofillDialogViewDelegate;
 }
 
-@class AutofillAccountChooser;
 @class AutofillDialogWindowController;
-@class AutofillLoadingShieldController;
-@class AutofillMainContainer;
-@class AutofillOverlayController;
-@class AutofillSignInContainer;
 
 namespace autofill {
 
 class AutofillDialogCocoa : public AutofillDialogView,
                             public TestableAutofillDialogView,
                             public ConstrainedWindowMacDelegate {
  public:
   explicit AutofillDialogCocoa(AutofillDialogViewDelegate* delegate);
   virtual ~AutofillDialogCocoa();
 
@@ skipping 59 matching lines @@
   // WeakPtrFactory for deferred close.
   base::WeakPtrFactory<AutofillDialogCocoa> close_weak_ptr_factory_;
 
   // The delegate |this| queries for logic and state.
   AutofillDialogViewDelegate* delegate_;
 };
 
 }  // autofill
 
 #endif  // CHROME_BROWSER_UI_COCOA_AUTOFILL_AUTOFILL_DIALOG_COCOA_H_