Convert Pass()→std::move() in //tools

tools/gn/function_toolchain.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 <algorithm>
 #include <limits>
+#include <utility>
 
 #include "tools/gn/err.h"
 #include "tools/gn/functions.h"
 #include "tools/gn/parse_tree.h"
 #include "tools/gn/scheduler.h"
 #include "tools/gn/scope.h"
 #include "tools/gn/settings.h"
 #include "tools/gn/tool.h"
 #include "tools/gn/toolchain.h"
 #include "tools/gn/value_extractors.h"
@@ skipping 868 matching lines @@
       (tool->link_output().empty() && !tool->depend_output().empty())) {
     *err = Err(function, "Both link_output and depend_output should either "
         "be specified or they should both be empty.");
     return Value();
   }
 
   // Make sure there weren't any vars set in this tool that were unused.
   if (!block_scope.CheckForUnusedVars(err))
     return Value();
 
-  toolchain->SetTool(tool_type, tool.Pass());
+  toolchain->SetTool(tool_type, std::move(tool));
   return Value();
 }
 
 // toolchain_args --------------------------------------------------------------
 
 extern const char kToolchainArgs[] = "toolchain_args";
 extern const char kToolchainArgs_HelpShort[] =
     "toolchain_args: Set build arguments for toolchain build setup.";
 extern const char kToolchainArgs_Help[] =
     "toolchain_args: Set build arguments for toolchain build setup.\n"
@@ skipping 60 matching lines @@
     return Value();
 
   Scope::KeyValueMap values;
   block_scope.GetCurrentScopeValues(&values);
   toolchain->args() = values;
 
   return Value();
 }
 
 }  // namespace functions