Get rid of ChannelInit::SetSingleProcessIOTaskRunner()

content/test/render_thread_impl_browser_test_ipc_helper.cc

Index: content/test/render_thread_impl_browser_test_ipc_helper.cc
diff --git a/content/test/render_thread_impl_browser_test_ipc_helper.cc b/content/test/render_thread_impl_browser_test_ipc_helper.cc
index 3075f753225d4e343b457dcfeb98b8a0cb1aea42..7f038859433ac473e341486db8036df448b2f4ad 100644
--- a/content/test/render_thread_impl_browser_test_ipc_helper.cc
+++ b/content/test/render_thread_impl_browser_test_ipc_helper.cc
@@ -41,7 +41,6 @@ void RenderThreadImplBrowserIPCTestHelper::SetupIpcThread() {
   base::Thread::Options options;
   options.message_loop_type = base::MessageLoop::TYPE_IO;
   ASSERT_TRUE(ipc_thread_->StartWithOptions(options));
-  ChannelInit::SetSingleProcessIOTaskRunner(ipc_thread_->task_runner());
 }
 
 void RenderThreadImplBrowserIPCTestHelper::SetupMojo() {
@@ -64,4 +63,9 @@ void RenderThreadImplBrowserIPCTestHelper::SetupMojo() {
   mojo_host_->OnClientLaunched(base::GetCurrentProcessHandle());
 }
 
+scoped_refptr<base::SingleThreadTaskRunner>
+RenderThreadImplBrowserIPCTestHelper::GetIOTaskRunner() const {
+  return ipc_thread_->task_runner();
+}
+
 }  // namespace content