GN get_label_info support toolchains for target_out_dir.

tools/gn/filesystem_utils.h

 // 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.
 
 #ifndef TOOLS_GN_FILESYSTEM_UTILS_H_
 #define TOOLS_GN_FILESYSTEM_UTILS_H_
 
 #include <string>
 
 #include "base/files/file_path.h"
@@ skipping 160 matching lines @@
                                 const Label& label, bool is_default);
 
 SourceDir GetToolchainGenDir(const Settings* settings);
 OutputFile GetToolchainGenDirAsOutputFile(const Settings* settings);
 SourceDir GetToolchainGenDir(const BuildSettings* build_settings,
                              const Label& toolchain_label,
                              bool is_default);
 
 SourceDir GetOutputDirForSourceDir(const Settings* settings,
                                    const SourceDir& source_dir);
+SourceDir GetOutputDirForSourceDir(const BuildSettings* build_settings,
+                                   const SourceDir& source_dir,
+                                   const Label& toolchain_label,
+                                   bool is_default_toolchain);
+OutputFile GetOutputDirForSourceDirAsOutputFile(
+    const BuildSettings* build_settings,
+    const SourceDir& source_dir,
+    const Label& toolchain_label,
+    bool is_default_toolchain);
 OutputFile GetOutputDirForSourceDirAsOutputFile(const Settings* settings,
                                                 const SourceDir& source_dir);
 
 SourceDir GetGenDirForSourceDir(const Settings* settings,
                                  const SourceDir& source_dir);
 OutputFile GetGenDirForSourceDirAsOutputFile(const Settings* settings,
                                              const SourceDir& source_dir);
 
 SourceDir GetTargetOutputDir(const Target* target);
 OutputFile GetTargetOutputDirAsOutputFile(const Target* target);
 SourceDir GetTargetGenDir(const Target* target);
 OutputFile GetTargetGenDirAsOutputFile(const Target* target);
 
 SourceDir GetCurrentOutputDir(const Scope* scope);
 SourceDir GetCurrentGenDir(const Scope* scope);
 
 #endif  // TOOLS_GN_FILESYSTEM_UTILS_H_