Update Crashpad to b47bf6c250c6b825dee1c5fbad9152c2c962e828

third_party/crashpad/crashpad/util/posix/drop_privileges.cc

 // Copyright 2014 The Crashpad Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
@@ skipping 53 matching lines @@
     // ensure that privileges cannot be regained. This can only be done if the
     // real user ID (and now the effective user ID as well) is not root, because
     // root always has permission to change identity.
     if (euid != uid) {
       CHECK_EQ(seteuid(euid), -1);
     }
     if (egid != gid) {
       CHECK_EQ(setegid(egid), -1);
     }
   }
-#elif defined(OS_LINUX)
+#elif defined(OS_LINUX) || defined(OS_ANDROID)
   PCHECK(setresgid(gid, gid, gid) == 0) << "setresgid";
   PCHECK(setresuid(uid, uid, uid) == 0) << "setresuid";
 
   // Don’t check to see if privileges can be regained on Linux, because on
   // Linux, it’s not as simple as ensuring that this can’t be done if non-root.
   // Instead, the ability to change user and group IDs are controlled by the
   // CAP_SETUID and CAP_SETGID capabilities, which may be granted to non-root
   // processes. Since the setresXid() interface is well-defined, it shouldn’t be
   // necessary to perform any additional checking anyway.
   //
   // TODO(mark): Drop CAP_SETUID and CAP_SETGID if present and non-root?
 #else
 #error Port this function to your system.
 #endif
 }
 
 }  // namespace crashpad