Unify PolicyBase into TargetPolicy.

sandbox/win/src/handle_dispatcher.cc

Index: sandbox/win/src/handle_dispatcher.cc
diff --git a/sandbox/win/src/handle_dispatcher.cc b/sandbox/win/src/handle_dispatcher.cc
index fb640ba938f9eb53b40ade51540a3c2fb5e2c973..6c85d19ca55eac15fb127121b903fadf8b259996 100644
--- a/sandbox/win/src/handle_dispatcher.cc
+++ b/sandbox/win/src/handle_dispatcher.cc
@@ -17,8 +17,8 @@
 
 namespace sandbox {
 
-HandleDispatcher::HandleDispatcher(PolicyBase* policy_base)
-    : policy_base_(policy_base) {
+HandleDispatcher::HandleDispatcher(TargetPolicy* policy)
+    : policy_(policy) {
   static const IPCCall duplicate_handle_proxy = {
       {IPC_DUPLICATEHANDLEPROXY_TAG,
        {VOIDPTR_TYPE, UINT32_TYPE, UINT32_TYPE, UINT32_TYPE}},
@@ -76,8 +76,8 @@ bool HandleDispatcher::DuplicateHandleProxy(IPCInfo* ipc,
   params[HandleTarget::NAME] = ParamPickerMake(type_info->Name.Buffer);
   params[HandleTarget::TARGET] = ParamPickerMake(target_process_id);
 
-  EvalResult eval = policy_base_->EvalPolicy(IPC_DUPLICATEHANDLEPROXY_TAG,
-                                             params.GetBase());
+  EvalResult eval =
+      policy_->EvalPolicy(IPC_DUPLICATEHANDLEPROXY_TAG, params.GetBase());
   ipc->return_info.win32_result =
       HandlePolicy::DuplicateHandleProxyAction(eval, handle.Get(),
                                                target_process_id,