# HG changeset patch
# User Bob Owen <bobowencode@gmail.com>
# Date 1510058662 0
#      Tue Nov 07 12:44:22 2017 +0000
# Node ID 5b2b8b6c509a1025ef6d6ba208b093d4c4359186
# Parent  2c3a28eab0bfcaa5a14771454f83703ae938da6c
Revert commit f7540af7428f4b146136ec19b781886693f8c03f changes to policy_target.cc for causing issues with CoInitializeSecurity. r=aklotz

diff --git a/security/sandbox/chromium/sandbox/win/src/policy_target.cc b/security/sandbox/chromium/sandbox/win/src/policy_target.cc
--- a/security/sandbox/chromium/sandbox/win/src/policy_target.cc
+++ b/security/sandbox/chromium/sandbox/win/src/policy_target.cc
@@ -78,16 +78,26 @@ NTSTATUS WINAPI TargetNtSetInformationTh
     NT_THREAD_INFORMATION_CLASS thread_info_class,
     PVOID thread_information,
     ULONG thread_information_bytes) {
   do {
     if (SandboxFactory::GetTargetServices()->GetState()->RevertedToSelf())
       break;
     if (ThreadImpersonationToken != thread_info_class)
       break;
+    if (!thread_information)
+      break;
+    HANDLE token;
+    if (sizeof(token) > thread_information_bytes)
+      break;
+
+    NTSTATUS ret = CopyData(&token, thread_information, sizeof(token));
+    if (!NT_SUCCESS(ret) || NULL != token)
+      break;
+
     // This is a revert to self.
     return STATUS_SUCCESS;
   } while (false);
 
   return orig_SetInformationThread(
       thread, thread_info_class, thread_information, thread_information_bytes);
 }
 
 // Hooks NtOpenThreadToken to force the open_as_self parameter to be set to