Cleanup/Remove Windows XP/Vista version checks from Windows sandbox code

sandbox/win/src/policy_broker.cc

Index: sandbox/win/src/policy_broker.cc
diff --git a/sandbox/win/src/policy_broker.cc b/sandbox/win/src/policy_broker.cc
index 74a93f0953d672f540873f0e51ba64b91707599f..f6ff13cd870cdedbbdab85439e543160952a1519 100644
--- a/sandbox/win/src/policy_broker.cc
+++ b/sandbox/win/src/policy_broker.cc
@@ -110,17 +110,14 @@ bool SetupBasicInterceptions(InterceptionManager* manager,
       !INTERCEPT_NT(manager, NtOpenThreadToken, OPEN_THREAD_TOKEN_ID, 20))
     return false;
 
-  if (base::win::GetVersion() >= base::win::VERSION_XP) {
-    // Bug 27218: We don't have dispatch for some x64 syscalls.
-    // This one is also provided by process_thread_policy.
-    if (!INTERCEPT_NT(manager, NtOpenProcessTokenEx, OPEN_PROCESS_TOKEN_EX_ID,
-                      20))
-      return false;
+  // This one is also provided by process_thread_policy.
+  if (!INTERCEPT_NT(manager, NtOpenProcessTokenEx, OPEN_PROCESS_TOKEN_EX_ID,
+                    20))
+    return false;
 
-    if (!INTERCEPT_NT(manager, NtOpenThreadTokenEx, OPEN_THREAD_TOKEN_EX_ID,
-                      24))
-      return false;
-  }
+  if (!INTERCEPT_NT(manager, NtOpenThreadTokenEx, OPEN_THREAD_TOKEN_EX_ID,
+                    24))
+    return false;
 
   if (!is_csrss_connected) {
     if (!INTERCEPT_EAT(manager, kKerneldllName, CreateThread, CREATE_THREAD_ID,