Convert remaining scoped_ptr -> std::unique_ptr in //mojo/edk (minus js).

mojo/nacl/monacl_shell.cc

 // 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.
 
 #include <iostream>
 
 #include "base/files/file.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "mojo/edk/embedder/embedder.h"
@@ skipping 17 matching lines @@
         std::endl;
     return 1;
   }
 
   const char* irt_file = argv[1];
   const char* nexe_file = argv[2];
 
   NaClDesc* irt_desc = OpenFile(irt_file);
   NaClDesc* nexe_desc = OpenFile(nexe_file);
 
-  mojo::embedder::Init(scoped_ptr<mojo::embedder::PlatformSupport>(
+  // TODO(vtl): Use make_unique when C++14 is available.
+  mojo::embedder::Init(std::unique_ptr<mojo::embedder::PlatformSupport>(
       new mojo::embedder::SimplePlatformSupport()));
 
   int exit_code = mojo::LaunchNaCl(nexe_desc, irt_desc, argc - 2, argv + 2,
                                    MOJO_HANDLE_INVALID);
 
   // Exits the process cleanly, does not return.
   mojo::NaClExit(exit_code);
   NOTREACHED();
   return 1;
 }