Add RetainedRef uses where needed.

base/test/launcher/test_launcher.cc

 // Copyright 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 "base/test/launcher/test_launcher.h"
 
 #include "base/at_exit.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/environment.h"
@@ skipping 545 matching lines @@
   // Record the exact command line used to launch the child.
   CommandLine new_command_line(
       PrepareCommandLineForGTest(command_line, wrapper));
 
   // When running in parallel mode we need to redirect stdio to avoid mixed-up
   // output. We also always redirect on the bots to get the test output into
   // JSON summary.
   bool redirect_stdio = (parallel_jobs_ > 1) || BotModeEnabled();
 
   worker_pool_owner_->pool()->PostWorkerTask(
-      FROM_HERE, Bind(&DoLaunchChildTestProcess, new_command_line, timeout,
-                      options, redirect_stdio, ThreadTaskRunnerHandle::Get(),
-                      Bind(&TestLauncher::OnLaunchTestProcessFinished,
-                           Unretained(this), completed_callback),
-                      launched_callback));
+      FROM_HERE,
+      Bind(&DoLaunchChildTestProcess, new_command_line, timeout, options,
+           redirect_stdio, RetainedRef(ThreadTaskRunnerHandle::Get()),
+           Bind(&TestLauncher::OnLaunchTestProcessFinished, Unretained(this),
+                completed_callback),
+           launched_callback));
 }
 
 void TestLauncher::OnTestFinished(const TestResult& result) {
   ++test_finished_count_;
 
   bool print_snippet = false;
   std::string print_test_stdio("auto");
   if (CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kTestLauncherPrintTestStdio)) {
     print_test_stdio = CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
@@ skipping 538 matching lines @@
   }
 
   std::string snippet(full_output.substr(run_pos));
   if (end_pos != std::string::npos)
     snippet = full_output.substr(run_pos, end_pos - run_pos);
 
   return snippet;
 }
 
 }  // namespace base