Use WithoutPathExpansion on DictionaryValue in GN.

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 444 matching lines @@
   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::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)));
+        res->SetWithoutPathExpansion(
+            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) {
-        res->Set(config->label().GetUserVisibleName(false),
-                 DescBuilder::DescriptionForConfig(config, what_to_print));
+        res->SetWithoutPathExpansion(
+            config->label().GetUserVisibleName(false),
+            DescBuilder::DescriptionForConfig(config, what_to_print));
       }
     }
     std::string s;
     base::JSONWriter::WriteWithOptions(
         *res.get(), base::JSONWriter::OPTIONS_PRETTY_PRINT, &s);
     OutputString(s);
   } else {
     // Regular (non-json) formatted output
     bool multiple_outputs = (target_matches.size() + config_matches.size()) > 1;
 
@@ skipping 15 matching lines @@
 
       if (!PrintConfig(config, what_to_print, !multiple_outputs))
         return 1;
     }
   }
 
   return 0;
 }
 
 }  // namespace commands