Use SequencedWorkerPoolOwner in ParallelTestLauncher.

base/test/parallel_test_launcher.h

Index: base/test/parallel_test_launcher.h
diff --git a/base/test/parallel_test_launcher.h b/base/test/parallel_test_launcher.h
index 5e3ee2acf34e225c1f85bb1ae3de95c9b7c6544e..e7b07df9552c013189bb7b6e847c6326de7b417c 100644
--- a/base/test/parallel_test_launcher.h
+++ b/base/test/parallel_test_launcher.h
@@ -17,7 +17,7 @@ class CommandLine;
 
 namespace base {
 
-class SequencedWorkerPool;
+class SequencedWorkerPoolOwner;
 class Timer;
 
 // Launches child gtest process in parallel. Keeps track of running processes,
@@ -74,7 +74,7 @@ class ParallelTestLauncher {
   RunningProcessesMap running_processes_map_;
 
   // Worker pool used to launch processes in parallel.
-  scoped_refptr<SequencedWorkerPool> worker_pool_;
+  scoped_ptr<SequencedWorkerPoolOwner> worker_pool_owner_;
 
   // Make sure we don't accidentally call the wrong methods e.g. on the worker
   // pool thread. With lots of callbacks used this is non-trivial.