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

sandbox/win/src/policy_broker.cc

 // Copyright (c) 2012 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 <map>
 
 #include "sandbox/win/src/policy_broker.h"
 
 #include "base/logging.h"
 #include "base/win/pe_image.h"
@@ skipping 55 matching lines @@
   INIT_GLOBAL_RTL(RtlAllocateHeap);
   INIT_GLOBAL_RTL(RtlAnsiStringToUnicodeString);
   INIT_GLOBAL_RTL(RtlCompareUnicodeString);
   INIT_GLOBAL_RTL(RtlCreateHeap);
   INIT_GLOBAL_RTL(RtlCreateUserThread);
   INIT_GLOBAL_RTL(RtlDestroyHeap);
   INIT_GLOBAL_RTL(RtlFreeHeap);
   INIT_GLOBAL_RTL(_strnicmp);
   INIT_GLOBAL_RTL(strlen);
   INIT_GLOBAL_RTL(wcslen);
+  INIT_GLOBAL_RTL(memcpy);
 
 #ifndef NDEBUG
   // Verify that the structure is fully initialized.
   for (size_t i = 0; i < sizeof(g_nt)/sizeof(void*); i++)
     DCHECK(reinterpret_cast<char**>(&g_nt)[i]);
 #endif
   return (SBOX_ALL_OK == child->TransferVariable("g_nt", &g_nt, sizeof(g_nt)));
 }
 
 #undef INIT_GLOBAL_NT
@@ skipping 20 matching lines @@
       return false;
 
     return INTERCEPT_NT(manager, NtOpenThreadTokenEx, OPEN_THREAD_TOKEN_EX_ID,
                         24);
   }
 
   return true;
 }
 
 }  // namespace sandbox