Restructure sandbox code to reduce dependencies pulled in by intercept code.

sandbox/win/src/sandbox_globals.cc

Index: sandbox/win/src/sandbox_globals.cc
diff --git a/sandbox/win/src/sandbox_globals.cc b/sandbox/win/src/sandbox_globals.cc
new file mode 100644
index 0000000000000000000000000000000000000000..e1419d35a32d20011b96ac38bc201dcd8fd29bed
--- /dev/null
+++ b/sandbox/win/src/sandbox_globals.cc
@@ -0,0 +1,18 @@
+// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include <windows.h>
+
+#include "sandbox/win/src/sandbox_nt_types.h"
+#include "sandbox/win/src/sandbox_types.h"
+
+namespace sandbox {
+
+// The section for IPC and policy.
+SANDBOX_INTERCEPT HANDLE g_shared_section = NULL;
+
+// This is the list of all imported symbols from ntdll.dll.
+SANDBOX_INTERCEPT NtExports g_nt = { NULL };
+
+}  // namespace sandbox