Disable file operations on NACL builds.

base/metrics/persistent_memory_allocator.cc

 // Copyright (c) 2015 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/metrics/persistent_memory_allocator.h"
 
 #include <assert.h>
 #include <algorithm>
 
 #include "base/files/memory_mapped_file.h"
@@ skipping 736 matching lines @@
 
 SharedPersistentMemoryAllocator::~SharedPersistentMemoryAllocator() {}
 
 // static
 bool SharedPersistentMemoryAllocator::IsSharedMemoryAcceptable(
     const SharedMemory& memory) {
   return IsMemoryAcceptable(memory.memory(), memory.mapped_size(), 0, false);
 }
 
 
+#if !defined(OS_NACL)
 //----- FilePersistentMemoryAllocator ------------------------------------------
 
 FilePersistentMemoryAllocator::FilePersistentMemoryAllocator(
     std::unique_ptr<MemoryMappedFile> file,
     size_t max_size,
     uint64_t id,
     base::StringPiece name,
     bool read_only)
     : PersistentMemoryAllocator(const_cast<uint8_t*>(file->data()),
                                 max_size != 0 ? max_size : file->length(),
                                 0,
                                 id,
                                 name,
                                 read_only),
       mapped_file_(std::move(file)) {}
 
 FilePersistentMemoryAllocator::~FilePersistentMemoryAllocator() {}
 
 // static
 bool FilePersistentMemoryAllocator::IsFileAcceptable(
     const MemoryMappedFile& file,
     bool read_only) {
   return IsMemoryAcceptable(file.data(), file.length(), 0, read_only);
 }
+#endif  // !defined(OS_NACL)
 
 }  // namespace base