Order function definitions in base/ according to the header.

base/global_descriptors_posix.h

 // Copyright (c) 2011 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_GLOBAL_DESCRIPTORS_POSIX_H_
 #define BASE_GLOBAL_DESCRIPTORS_POSIX_H_
 #pragma once
 
 #include "build/build_config.h"
 
@@ skipping 37 matching lines @@
 
   // Get a descriptor given a key. It is a fatal error if the key is not known.
   int Get(Key key) const;
 
   // Get a descriptor give a key. Returns -1 on error.
   int MaybeGet(Key key) const;
 
   // Set the descriptor for the given key.
   void Set(Key key, int fd);
 
-  void Reset(const Mapping& mapping) {
-    descriptors_ = mapping;
-  }
+  void Reset(const Mapping& mapping);
 
  private:
   friend struct DefaultSingletonTraits<GlobalDescriptors>;
   GlobalDescriptors();
   ~GlobalDescriptors();
 
   Mapping descriptors_;
 };
 
 }  // namespace base
 
 #endif  // BASE_GLOBAL_DESCRIPTORS_POSIX_H_