Remove obviously unneeded forward declarations in chrome/browser/[abef]*/*.h.

chrome/browser/autocomplete/autocomplete_popup_view_mac.h

 // Copyright (c) 2010 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_AUTOCOMPLETE_AUTOCOMPLETE_POPUP_VIEW_MAC_H_
 #define CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_POPUP_VIEW_MAC_H_
 #pragma once
 
 #import <Cocoa/Cocoa.h>
 
 #include <string>
 #include <map>
 
 #include "base/basictypes.h"
 #include "base/scoped_ptr.h"
 #include "base/scoped_nsobject.h"
 #include "chrome/browser/autocomplete/autocomplete.h"
 #include "chrome/browser/autocomplete/autocomplete_popup_view.h"
 #include "gfx/font.h"
 #include "webkit/glue/window_open_disposition.h"
 
 class AutocompletePopupModel;
 class AutocompleteEditModel;
 class AutocompleteEditViewMac;
 @class NSImage;
 class Profile;
-class SkBitmap;
 
 // Implements AutocompletePopupView using a raw NSWindow containing an
 // NSTableView.
 //
 // TODO(rohitrao): This class is set up in a way that makes testing hard.
 // Refactor and write unittests.  http://crbug.com/9977
 
 class AutocompletePopupViewMac : public AutocompletePopupView {
  public:
   AutocompletePopupViewMac(AutocompleteEditViewMac* edit_view,
@@ skipping 88 matching lines @@
   NSTextField* field_;  // owned by tab controller
 
   // Child window containing a matrix which implements the popup.
   scoped_nsobject<NSWindow> popup_;
   NSRect targetPopupFrame_;
 
   DISALLOW_COPY_AND_ASSIGN(AutocompletePopupViewMac);
 };
 
 #endif  // CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_POPUP_VIEW_MAC_H_