Cleanup remaining class/struct fwd declarations

courgette/disassembler_win32_x64.h

 // Copyright 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 COURGETTE_DISASSEMBLER_WIN32_X64_H_
 #define COURGETTE_DISASSEMBLER_WIN32_X64_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include "base/macros.h"
 #include "courgette/disassembler_win32.h"
 #include "courgette/image_utils.h"
 #include "courgette/types_win_pe.h"
 
 namespace courgette {
 
-class AssemblyProgram;
 class InstructionReceptor;
 
 class DisassemblerWin32X64 : public DisassemblerWin32 {
  public:
   // Returns true if a valid executable is detected using only quick checks.
   static bool QuickDetect(const uint8_t* start, size_t length) {
     return DisassemblerWin32::QuickDetect(start, length,
                                           kImageNtOptionalHdr64Magic);
   }
 
@@ skipping 20 matching lines @@
     return kOffsetOfDataDirectoryFromImageOptionalHeader64;
   }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(DisassemblerWin32X64);
 };
 
 }  // namespace courgette
 
 #endif  // COURGETTE_DISASSEMBLER_WIN32_X64_H_