Modify fileAtPath stat to track if the call was redirected by chrome_elf.

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 22 matching lines @@
           # Set /SUBSYSTEM:WINDOWS.
           'SubSystem': '2',
           'AdditionalDependencies!': [
             'user32.lib',
           ],
           'IgnoreDefaultLibraryNames': [
             'user32.lib',
           ],
         },
       },
+      '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_unittests_exe',
       'product_name': 'chrome_elf_unittests',
       'type': 'executable',
       'sources': [
         'blacklist/test/blacklist_test.cc',
         'chrome_elf_util_unittest.cc',
         'create_file/chrome_create_file_unittest.cc',
         'elf_imports_unittest.cc',
@@ skipping 108 matching lines @@
     ['component=="shared_library"', {
       'targets': [
         {
           'target_name': 'chrome_redirects',
           'type': 'shared_library',
           'include_dirs': [
             '..',
           ],
           'sources': [
             'chrome_redirects.def',
+            'chrome_redirects_main.cc',
           ],
           'dependencies': [
             'chrome_elf_lib',
           ],
           'msvs_settings': {
             'VCLinkerTool': {
               'BaseAddress': '0x01c10000',
               # Set /SUBSYSTEM:WINDOWS.
               'SubSystem': '2',
             },
           },
           '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',
               ],
             }],
           ],
         },
       ],
     }],
   ],
 }