Add ChannelProxy benchmark to ipc_perftests.

mojo/system/test_utils.h

Index: mojo/system/test_utils.h
diff --git a/mojo/system/test_utils.h b/mojo/system/test_utils.h
index 8c0609f42b5af648622c37c5f175629e6dae0a6b..80c2930a8de06a3a35aa34d1815ce3aa91b04cc1 100644
--- a/mojo/system/test_utils.h
+++ b/mojo/system/test_utils.h
@@ -54,41 +54,6 @@ class Stopwatch {
   DISALLOW_COPY_AND_ASSIGN(Stopwatch);
 };
 
-// TestIOThread ----------------------------------------------------------------
-
-class TestIOThread {
- public:
-  enum Mode { kAutoStart, kManualStart };
-  explicit TestIOThread(Mode mode);
-  // Stops the I/O thread if necessary.
-  ~TestIOThread();
-
-  // |Start()|/|Stop()| should only be called from the main (creation) thread.
-  // After |Stop()|, |Start()| may be called again to start a new I/O thread.
-  // |Stop()| may be called even when the I/O thread is not started.
-  void Start();
-  void Stop();
-
-  void PostTask(const tracked_objects::Location& from_here,
-                const base::Closure& task);
-  void PostTaskAndWait(const tracked_objects::Location& from_here,
-                       const base::Closure& task);
-
-  base::MessageLoopForIO* message_loop() {
-    return static_cast<base::MessageLoopForIO*>(io_thread_.message_loop());
-  }
-
-  scoped_refptr<base::TaskRunner> task_runner() {
-    return message_loop()->message_loop_proxy();
-  }
-
- private:
-  base::Thread io_thread_;
-  bool io_thread_started_;
-
-  DISALLOW_COPY_AND_ASSIGN(TestIOThread);
-};
-
 }  // namespace test
 }  // namespace system
 }  // namespace mojo