CrossThreadCopier: Consider arithmetic and enum types as safe.

third_party/WebKit/Source/platform/CrossThreadCopier.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 69 matching lines @@
     >::value),
     "RefPtr test");
 static_assert((std::is_same<
     PassRefPtr<CopierThreadSafeRefCountedTest>,
     CrossThreadCopier<CopierThreadSafeRefCountedTest*>::Type
     >::value),
     "RawPointer test");
 
 
 // Add a generic specialization which will let's us verify that no other template matches.
-template<typename T> struct CrossThreadCopierBase<false, false, false, T> {
+template<typename T> struct CrossThreadCopierBase<T, false, false, false> {
     typedef int Type;
 };
 
 // Verify that RefCounted objects only match our generic template which exposes Type as int.
 class CopierRefCountedTest : public RefCounted<CopierRefCountedTest> {
 };
 
 static_assert((std::is_same<
     int,
     CrossThreadCopier<PassRefPtr<CopierRefCountedTest>>::Type
@@ skipping 20 matching lines @@
     "PassOwnPtr test");
 
 // Verify that PassOwnPtr does not get passed through.
 static_assert((std::is_same<
     int,
     CrossThreadCopier<OwnPtr<float>>::Type
     >::value),
     "OwnPtr test");
 
 } // namespace blink