sandbox/win: Fix warnings found by clang chromium-style plugin on Windows.

sandbox/win/src/policy_low_level.cc

Index: sandbox/win/src/policy_low_level.cc
diff --git a/sandbox/win/src/policy_low_level.cc b/sandbox/win/src/policy_low_level.cc
index ef9b4e1fade67b961f70d9bd331bda8aae9a9c0c..739321ca07bb120f75f44c4697ffa8e09de8c5e3 100644
--- a/sandbox/win/src/policy_low_level.cc
+++ b/sandbox/win/src/policy_low_level.cc
@@ -2,10 +2,11 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include "sandbox/win/src/policy_low_level.h"
+
 #include <string>
 #include <map>
 
-#include "sandbox/win/src/policy_low_level.h"
 #include "base/basictypes.h"
 
 namespace {
@@ -31,6 +32,10 @@ namespace {
 
 namespace sandbox {
 
+LowLevelPolicy::LowLevelPolicy(PolicyGlobal* policy_store)
+    : policy_store_(policy_store) {
+}
+
 // Adding a rule is nothing more than pushing it into an stl container. Done()
 // is called for the rule in case the code that made the rule in the first
 // place has not done it.