Remove #pragma once. Just from base/ for now.

base/memory/scoped_generic_obj.h

 // 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.
 
 #ifndef BASE_MEMORY_SCOPED_GENERIC_OBJ_H_
 #define BASE_MEMORY_SCOPED_GENERIC_OBJ_H_
-#pragma once
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 
 // ScopedGenericObj<> is patterned after scoped_ptr_malloc<>, except
 // that it assumes the template argument is typedef'ed to a pointer
 // type. It does not support retain/release semantics. It takes as its
 // second template argument a functor which frees the object.
 //
 // Example (Mac-specific):
@@ skipping 103 matching lines @@
 bool operator==(C* p, const ScopedGenericObj<C, FP>& b) {
   return p == b.get();
 }
 
 template<class C, class FP> inline
 bool operator!=(C* p, const ScopedGenericObj<C, FP>& b) {
   return p != b.get();
 }
 
 #endif  // BASE_MEMORY_SCOPED_GENERIC_OBJ_H_