Add ChannelProxy benchmark to ipc_perftests.

ipc/ipc_test_base.cc

Index: ipc/ipc_test_base.cc
diff --git a/ipc/ipc_test_base.cc b/ipc/ipc_test_base.cc
index f893c28acab1ed14d2d1bbf94b0e2489f8c8318d..45aa03ebd32ac134f7b5a6a1d5feb379efe00059 100644
--- a/ipc/ipc_test_base.cc
+++ b/ipc/ipc_test_base.cc
@@ -39,10 +39,14 @@ void IPCTestBase::SetUp() {
 
 void IPCTestBase::TearDown() {
   DCHECK(message_loop_.get());
-  message_loop_.reset();
+  message_loop_ = CreateMessageLoop().Pass();
   MultiProcessTest::TearDown();
 }
 
+scoped_ptr<base::MessageLoop> IPCTestBase::CreateMessageLoop() {
+  return make_scoped_ptr<base::MessageLoop>(new base::MessageLoopForIO());

[viettrungluu, 2014/08/27 16:47:18]

Nit: If you have to give the template parameter, there's no point in using
make_scoped_ptr, i.e., you may as well just write
scoped_ptr<base::MessageLoop>(...).

[Hajime Morrita, 2014/08/27 17:47:43]

Done.

+}
+
 void IPCTestBase::Init(const std::string& test_client_name) {
   DCHECK(!test_client_name.empty());
   DCHECK(test_client_name_.empty());
@@ -130,6 +134,6 @@ bool IPCTestBase::WaitForClientShutdown() {
   return rv;
 }
 
-scoped_refptr<base::TaskRunner> IPCTestBase::io_thread_task_runner() {
+scoped_refptr<base::TaskRunner> IPCTestBase::task_runner() {
   return message_loop_->message_loop_proxy();
 }