Unify PolicyBase into TargetPolicy.

sandbox/win/src/process_thread_dispatcher.cc

Index: sandbox/win/src/process_thread_dispatcher.cc
diff --git a/sandbox/win/src/process_thread_dispatcher.cc b/sandbox/win/src/process_thread_dispatcher.cc
index 90cad6365f927d2f1aed9fadc3e0d9195ce8c01a..b2ceafaa82fdf7feddd2de55a107f9355c277781 100644
--- a/sandbox/win/src/process_thread_dispatcher.cc
+++ b/sandbox/win/src/process_thread_dispatcher.cc
@@ -94,8 +94,8 @@ bool ConvertToAbsolutePath(const base::string16& child_current_directory,
 }  // namespace
 namespace sandbox {
 
-ThreadProcessDispatcher::ThreadProcessDispatcher(PolicyBase* policy_base)
-    : policy_base_(policy_base) {
+ThreadProcessDispatcher::ThreadProcessDispatcher(TargetPolicy* policy)
+    : policy_(policy) {
   static const IPCCall open_thread = {
       {IPC_NTOPENTHREAD_TAG, {UINT32_TYPE, UINT32_TYPE}},
       reinterpret_cast<CallbackGeneric>(
@@ -227,8 +227,8 @@ bool ThreadProcessDispatcher::CreateProcessW(IPCInfo* ipc, base::string16* name,
   CountedParameterSet<NameBased> params;
   params[NameBased::NAME] = ParamPickerMake(const_exe_name);
 
-  EvalResult eval = policy_base_->EvalPolicy(IPC_CREATEPROCESSW_TAG,
-                                             params.GetBase());
+  EvalResult eval =
+      policy_->EvalPolicy(IPC_CREATEPROCESSW_TAG, params.GetBase());
 
   PROCESS_INFORMATION* proc_info =
       reinterpret_cast<PROCESS_INFORMATION*>(info->Buffer());