Make the windows_version.h functions threadsafe by using a singleton. Add accessors to the singl...

sandbox/src/interception.cc

Index: sandbox/src/interception.cc
===================================================================
--- sandbox/src/interception.cc	(revision 80824)
+++ sandbox/src/interception.cc	(working copy)
@@ -438,7 +438,8 @@
 #endif
 
   ServiceResolverThunk* thunk;
-  if (base::win::GetWOW64Status() == base::win::WOW64_ENABLED)
+  if (base::win::OSInfo::GetInstance()->wow64_status() ==
+      base::win::OSInfo::WOW64_ENABLED)
     thunk = new Wow64ResolverThunk(child_->Process(), relaxed_);
   else if (!IsXPSP2OrLater())
     thunk = new Win2kResolverThunk(child_->Process(), relaxed_);