Convert Pass()→std::move() in //tools

tools/gn/loader_unittest.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 <map>
 #include <utility>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 60 matching lines @@
   scoped_ptr<CannedResult> canned(new CannedResult);
   canned->input_file.reset(new InputFile(source_file));
   canned->input_file->SetContents(source);
 
   // Tokenize.
   Err err;
   canned->tokens = Tokenizer::Tokenize(canned->input_file.get(), &err);
   EXPECT_FALSE(err.has_error());
 
   // Parse.
-  canned->root = Parser::Parse(canned->tokens, &err).Pass();
+  canned->root = Parser::Parse(canned->tokens, &err);
   EXPECT_FALSE(err.has_error());
 
   canned_responses_[source_file] = std::move(canned);
 }
 
 bool MockInputFileManager::HasOnePending(const SourceFile& f) const {
   return pending_.size() == 1u && pending_[0].first == f;
 }
 
 bool MockInputFileManager::HasTwoPending(const SourceFile& f1,
@@ skipping 85 matching lines @@
   loader->Load(third_file, LocationRange(), second_tc);
   EXPECT_TRUE(mock_ifm_.HasOnePending(build_config));
 
   // Running the build config file should make our third file pending.
   mock_ifm_.IssueAllPending();
   scheduler_.main_loop()->RunUntilIdle();
   EXPECT_TRUE(mock_ifm_.HasTwoPending(second_file, third_file));
 
   EXPECT_FALSE(scheduler_.is_failed());
 }