Add private members to lithium classes on X64. Add implementation file lithi...

tools/gyp/v8.gyp

 # Copyright 2009 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 653 matching lines @@
                 '../../src/x64/codegen-x64.h',
                 '../../src/x64/cpu-x64.cc',
                 '../../src/x64/debug-x64.cc',
                 '../../src/x64/deoptimizer-x64.cc',
                 '../../src/x64/disasm-x64.cc',
                 '../../src/x64/frames-x64.cc',
                 '../../src/x64/frames-x64.h',
                 '../../src/x64/full-codegen-x64.cc',
                 '../../src/x64/ic-x64.cc',
                 '../../src/x64/jump-target-x64.cc',
+                '../../src/x64/lithium-codegen-x64.h',
+                '../../src/x64/lithium-x64.cc',
+                '../../src/x64/lithium-x64.h',
                 '../../src/x64/macro-assembler-x64.cc',
                 '../../src/x64/macro-assembler-x64.h',
                 '../../src/x64/regexp-macro-assembler-x64.cc',
                 '../../src/x64/regexp-macro-assembler-x64.h',
                 '../../src/x64/register-allocator-x64.cc',
                 '../../src/x64/stub-cache-x64.cc',
                 '../../src/x64/virtual-frame-x64.cc',
                 '../../src/x64/virtual-frame-x64.h',
               ],
             }],
@@ skipping 152 matching lines @@
           'target_name': 'v8_shell',
           'type': 'none',
           'dependencies': [
             'v8'
           ],
         },
       ],
     }],
   ],
 }