mac: Let gcapi install chrome as the CGSession owner

chrome/installer/gcapi_mac/gcapi.h

 // Copyright (c) 2012 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_INSTALLER_GCAPI_MAC_GCAPI_H_
 #define CHROME_INSTALLER_GCAPI_MAC_GCAPI_H_
 
 // Error conditions for GoogleChromeCompatibilityCheck().
-#define GCCC_ERROR_USERLEVELALREADYPRESENT       (1 << 0)
-#define GCCC_ERROR_SYSTEMLEVELALREADYPRESENT     (1 << 1)
-#define GCCC_ERROR_ACCESSDENIED                  (1 << 2)
-#define GCCC_ERROR_OSNOTSUPPORTED                (1 << 3)
-#define GCCC_ERROR_ALREADYOFFERED                (1 << 4)
-#define GCCC_ERROR_INTEGRITYLEVEL                (1 << 5)
+#define GCCC_ERROR_ALREADYPRESENT                (1 << 0)
+#define GCCC_ERROR_ACCESSDENIED                  (1 << 1)
+#define GCCC_ERROR_OSNOTSUPPORTED                (1 << 2)
+#define GCCC_ERROR_ALREADYOFFERED                (1 << 3)
+#define GCCC_ERROR_INTEGRITYLEVEL                (1 << 4)
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 // This function returns nonzero if Google Chrome should be offered.
 // If the return value is 0, |reasons| explains why.  If you don't care for the
 // reason, you can pass NULL for |reasons|.
 int GoogleChromeCompatibilityCheck(unsigned* reasons);
 
@@ skipping 18 matching lines @@
                         unsigned master_prefs_contents_size);
 
 // This function launches Google Chrome after a successful install.
 int LaunchGoogleChrome();
 
 #ifdef __cplusplus
 }  // extern "C"
 #endif
 
 #endif  // CHROME_INSTALLER_GCAPI_MAC_GCAPI_H_