"typedef Foo Bar" -> "using Bar = Foo" in //mojo/edk/....

mojo/edk/system/mapping_table.h

 // Copyright 2014 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 MOJO_EDK_SYSTEM_MAPPING_TABLE_H_
 #define MOJO_EDK_SYSTEM_MAPPING_TABLE_H_
 
 #include <stdint.h>
 
 #include <vector>
@@ skipping 31 matching lines @@
 
   // Tries to add a mapping. (Takes ownership of the mapping in all cases; on
   // failure, it will be destroyed.)
   MojoResult AddMapping(
       scoped_ptr<embedder::PlatformSharedBufferMapping> mapping);
   MojoResult RemoveMapping(uintptr_t address);
 
  private:
   friend bool internal::ShutdownCheckNoLeaks(Core*);
 
-  typedef base::hash_map<uintptr_t, embedder::PlatformSharedBufferMapping*>
-      AddressToMappingMap;
+  using AddressToMappingMap =
+      base::hash_map<uintptr_t, embedder::PlatformSharedBufferMapping*>;
   AddressToMappingMap address_to_mapping_map_;
 
   DISALLOW_COPY_AND_ASSIGN(MappingTable);
 };
 
 }  // namespace system
 }  // namespace mojo
 
 #endif  // MOJO_EDK_SYSTEM_MAPPING_TABLE_H_