Make chrome_elf use thunks instead of function pointers.

chrome_elf/chrome_elf.gyp

 # 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.
 {
   'variables': {
     'chromium_code': 1,
   },
   'includes': [
     '../build/util/version.gypi',
     '../build/win_precompile.gypi',
@@ skipping 87 matching lines @@
         '..',
       ],
       'sources': [
         'create_file/chrome_create_file.cc',
         'create_file/chrome_create_file.h',
         'ntdll_cache.cc',
         'ntdll_cache.h',
       ],
       'dependencies': [
         'chrome_elf_common',
+        '../base/base.gyp:base_static',
+        '../sandbox/sandbox.gyp:sandbox',
       ],
       'conditions': [
         ['component=="shared_library"', {
           # In component builds, all targets depend on chrome_redirects by
           # default. Remove it here to avoid a circular dependency.
           'dependencies!': [
             '../chrome_elf/chrome_elf.gyp:chrome_redirects',
           ],
         }],
       ],
     },
     {
       'target_name': 'chrome_elf_common',
       'type': 'static_library',
       'include_dirs': [
         '..',
       ],
       'sources': [
         'chrome_elf_constants.cc',
         'chrome_elf_constants.h',
         'chrome_elf_types.h',
         'chrome_elf_util.cc',
         'chrome_elf_util.h',
+        'thunk_getter.cc',
+        'thunk_getter.h',
       ],
       'conditions': [
         ['component=="shared_library"', {
           # In component builds, all targets depend on chrome_redirects by
           # default. Remove it here so we are able to test it.
           'dependencies!': [
             '../chrome_elf/chrome_elf.gyp:chrome_redirects',
           ],
         }],
       ],
@@ skipping 46 matching lines @@
                 '../chrome_elf/chrome_elf.gyp:chrome_redirects',
               ],
             }],
           ],
         },
       ],
     }],
   ],
 }