Revert 162293 - Enable DEP earlier on Vista and below

sandbox/win/src/process_mitigations.h

Index: sandbox/win/src/process_mitigations.h
===================================================================
--- sandbox/win/src/process_mitigations.h	(revision 162299)
+++ sandbox/win/src/process_mitigations.h	(working copy)
@@ -12,8 +12,6 @@
 
 namespace sandbox {
 
-class TargetProcess;
-
 // Sets the mitigation policy for the current process, ignoring any settings
 // that are invalid for the current version of Windows.
 bool ApplyProcessMitigationsToCurrentProcess(MitigationFlags flags);
@@ -31,8 +29,8 @@
 
 // Adds mitigations that need to be performed on the suspended target process
 // before execution begins.
-bool ApplyProcessMitigationsToSuspendedTarget(TargetProcess* target,
-                                              MitigationFlags flags);
+bool ApplyProcessMitigationsToSuspendedProcess(HANDLE process,
+                                               MitigationFlags flags);
 
 // Returns true if all the supplied flags can be set after a process starts.
 bool CanSetProcessMitigationsPostStartup(MitigationFlags flags);