Re-write many calls to WrapUnique() with MakeUnique()

tools/gn/command_desc.cc

 // Copyright (c) 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 <stddef.h>
 
 #include <algorithm>
 #include <set>
 #include <sstream>
 
@@ skipping 441 matching lines @@
     return 1;
 
   std::string what_to_print;
   if (args.size() == 3)
     what_to_print = args[2];
 
   bool json = cmdline->GetSwitchValueASCII("format") == "json";
 
   if (json) {
     // Convert all targets/configs to JSON, serialize and print them
-    auto res = base::WrapUnique(new base::DictionaryValue());
+    auto res = base::MakeUnique<base::DictionaryValue>();
     if (!target_matches.empty()) {
       for (const auto* target : target_matches) {
         res->Set(target->label().GetUserVisibleName(
                      target->settings()->default_toolchain_label()),
                  DescBuilder::DescriptionForTarget(
                      target, what_to_print, cmdline->HasSwitch(kAll),
                      cmdline->HasSwitch(kTree), cmdline->HasSwitch(kBlame)));
       }
     } else if (!config_matches.empty()) {
       for (const auto* config : config_matches) {
@@ skipping 27 matching lines @@
 
       if (!PrintConfig(config, what_to_print, !multiple_outputs))
         return 1;
     }
   }
 
   return 0;
 }
 
 }  // namespace commands