Fixing remaining VC++ 2015 64-bit build breaks

sandbox/win/src/policy_target_test.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 "base/memory/shared_memory.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_piece.h"
 #include "base/win/scoped_process_information.h"
 #include "base/win/windows_version.h"
 #include "sandbox/win/src/sandbox.h"
 #include "sandbox/win/src/sandbox_factory.h"
 #include "sandbox/win/src/sandbox_utils.h"
 #include "sandbox/win/src/target_services.h"
 #include "sandbox/win/tests/common/controller.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
+#if defined(OS_WIN)
+#include "base/win/win_util.h"
+#endif
+
 namespace sandbox {
 
 #define BINDNTDLL(name) \
     name ## Function name = reinterpret_cast<name ## Function>( \
       ::GetProcAddress(::GetModuleHandle(L"ntdll.dll"), #name))
 
 // Reverts to self and verify that SetInformationToken was faked. Returns
 // SBOX_TEST_SUCCEEDED if faked and SBOX_TEST_FAILED if not faked.
 SBOX_TESTS_COMMAND int PolicyTargetTest_token(int argc, wchar_t **argv) {
   HANDLE thread_token;
@@ skipping 348 matching lines @@
   wchar_t prog_name[MAX_PATH];
   GetModuleFileNameW(NULL, prog_name, MAX_PATH);
 
   TargetPolicy* policy = broker->CreatePolicy();
   void* shared_handle =
       policy->AddHandleToShare(read_only_view.handle().GetHandle());
 
   base::string16 arguments(L"\"");
   arguments += prog_name;
   arguments += L"\" -child 0 shared_memory_handle ";
-  arguments += base::UintToString16(
-      reinterpret_cast<unsigned int>(shared_handle));
+  arguments += base::UintToString16(base::win::HandleToUint32(shared_handle));
 
   // Launch the app.
   ResultCode result = SBOX_ALL_OK;
   base::win::ScopedProcessInformation target;
 
   policy->SetTokenLevel(USER_INTERACTIVE, USER_LOCKDOWN);
   PROCESS_INFORMATION temp_process_info = {};
   result = broker->SpawnTarget(prog_name, arguments.c_str(), policy,
                                &temp_process_info);
   policy->Release();
 
   EXPECT_EQ(SBOX_ALL_OK, result);
   if (result == SBOX_ALL_OK)
     target.Set(temp_process_info);
 
   EXPECT_EQ(1, ::ResumeThread(target.thread_handle()));
 
   EXPECT_EQ(WAIT_TIMEOUT,
             ::WaitForSingleObject(target.process_handle(), 2000));
 
   EXPECT_TRUE(::TerminateProcess(target.process_handle(), 0));
 
   ::WaitForSingleObject(target.process_handle(), INFINITE);
 }
 
 }  // namespace sandbox