Add ChannelProxy benchmark to ipc_perftests.

mojo/system/test_utils.h

 // 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.
 
 #ifndef MOJO_SYSTEM_TEST_UTILS_H_
 #define MOJO_SYSTEM_TEST_UTILS_H_
 
 #include <stdint.h>
 
 #include "base/callback_forward.h"
@@ skipping 36 matching lines @@
   void Start() { start_time_ = base::TimeTicks::Now(); }
 
   base::TimeDelta Elapsed() { return base::TimeTicks::Now() - start_time_; }
 
  private:
   base::TimeTicks start_time_;
 
   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
 
 #endif  // MOJO_SYSTEM_TEST_UTILS_H_