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

sandbox/win/src/sandbox_nt_util.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 "sandbox/win/src/sandbox_nt_util.h"
 
 #include "base/win/pe_image.h"
 #include "sandbox/win/src/sandbox_factory.h"
 #include "sandbox/win/src/target_services.h"
 
 namespace sandbox {
 
 // This is the list of all imported symbols from ntdll.dll.
-SANDBOX_INTERCEPT NtExports g_nt = { NULL };
+SANDBOX_INTERCEPT NtExports g_nt;
 
 }  // namespace sandbox
 
 namespace {
 
 #if defined(_WIN64)
 void* AllocateNearTo(void* source, size_t size) {
   using sandbox::g_nt;
 
   // Start with 1 GB above the source.
@@ skipping 176 matching lines @@
     TouchMemory(buffer, size, intent);
   } __except(EXCEPTION_EXECUTE_HANDLER) {
     return false;
   }
   return true;
 }
 
 NTSTATUS CopyData(void* destination, const void* source, size_t bytes) {
   NTSTATUS ret = STATUS_SUCCESS;
   __try {
-    if (SandboxFactory::GetTargetServices()->GetState()->InitCalled()) {
-      memcpy(destination, source, bytes);
-    } else {
-      const char* from = reinterpret_cast<const char*>(source);
-      char* to = reinterpret_cast<char*>(destination);
-      for (size_t i = 0; i < bytes; i++) {
-        to[i] = from[i];
-      }
-    }
+    g_nt.memcpy(destination, source, bytes);
   } __except(EXCEPTION_EXECUTE_HANDLER) {
     ret = GetExceptionCode();
   }
   return ret;
 }
 
 // Hacky code... replace with AllocAndCopyObjectAttributes.
 NTSTATUS AllocAndCopyName(const OBJECT_ATTRIBUTES* in_object,
                           wchar_t** out_name, uint32* attributes,
                           HANDLE* root) {
@@ skipping 363 matching lines @@
   UNREFERENCED_PARAMETER(type);
   return buffer;
 }
 
 void __cdecl operator delete(void* memory, void* buffer,
                              sandbox::AllocationType type) {
   UNREFERENCED_PARAMETER(memory);
   UNREFERENCED_PARAMETER(buffer);
   UNREFERENCED_PARAMETER(type);
 }