Add LINKER_INITIALIZER marker to MemoryMappedFile::Region::kWholeFile

base/files/memory_mapped_file.cc

 // Copyright 2013 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/files/memory_mapped_file.h"
 
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/sys_info.h"
 
 namespace base {
 
-const MemoryMappedFile::Region MemoryMappedFile::Region::kWholeFile;
+const MemoryMappedFile::Region MemoryMappedFile::Region::kWholeFile(
+    base::LINKER_INITIALIZED);
 
-MemoryMappedFile::Region::Region() : offset(0), size(0) {
+MemoryMappedFile::Region::Region(base::LinkerInitialized) : offset(0), size(0) {
 }
 
 MemoryMappedFile::Region::Region(int64 offset, int64 size)
     : offset(offset), size(size) {
   DCHECK_GE(offset, 0);
   DCHECK_GT(size, 0);
 }
 
 bool MemoryMappedFile::Region::operator==(
     const MemoryMappedFile::Region& other) const {
@@ skipping 53 matching lines @@
                                                     int32* offset) {
   // Sadly, on Windows, the mmap alignment is not just equal to the page size.
   const int64 mask = static_cast<int64>(SysInfo::VMAllocationGranularity()) - 1;
   DCHECK_LT(mask, std::numeric_limits<int32>::max());
   *offset = start & mask;
   *aligned_start = start & ~mask;
   *aligned_size = (size + *offset + mask) & ~mask;
 }
 
 }  // namespace base