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

sandbox/win/src/interception.cc

 // 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.
 
 // For information about interceptions as a whole see
 // http://dev.chromium.org/developers/design-documents/sandbox .
 
 #include <stddef.h>
 
 #include <set>
@@ skipping 451 matching lines @@
   // Bypass purify's interception.
   wchar_t* loader_get = reinterpret_cast<wchar_t*>(
                             ntdll_image.GetProcAddress("LdrGetDllHandle"));
   if (loader_get) {
     if (!GetModuleHandleEx(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS |
                                GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT,
                            loader_get, &ntdll_base))
       return false;
   }
 
-  if (base::win::GetVersion() <= base::win::VERSION_VISTA) {
-    Wow64 WowHelper(child_, ntdll_base);
-    if (!WowHelper.WaitForNtdll())

[Will Harris, 2016/03/17 23:05:58]

this appears to be the only place this is used, so can we delete wow64.cc and
wow64.h completely?

[kylix_rd, 2016/03/17 23:40:10]

I will certainly look into that.

[kylix_rd, 2016/03/21 19:09:09]

Done.

-      return false;
-  }
-
   char* interceptor_base = NULL;
 
 #if SANDBOX_EXPORTS
   interceptor_base = reinterpret_cast<char*>(child_->MainModule());
   HMODULE local_interceptor = ::LoadLibrary(child_->Name());
 #endif
 
   ServiceResolverThunk* thunk;
 #if defined(_WIN64)
   thunk = new ServiceResolverThunk(child_->Process(), relaxed_);
@@ skipping 63 matching lines @@
     ::FreeLibrary(local_interceptor);
 #endif
 
   if (it != interceptions_.end())
     return false;
 
   return true;
 }
 
 }  // namespace sandbox