cros: Replace BrowserThread::FILE in InputServiceProxy

components/pairing/bluetooth_host_pairing_controller.h

Index: components/pairing/bluetooth_host_pairing_controller.h
diff --git a/components/pairing/bluetooth_host_pairing_controller.h b/components/pairing/bluetooth_host_pairing_controller.h
index a9a9d4010a2a2475e8ce726f217ef7b50546d0ec..faa2d107a8d8c34b44229005fdc8e85fc07a9c2e 100644
--- a/components/pairing/bluetooth_host_pairing_controller.h
+++ b/components/pairing/bluetooth_host_pairing_controller.h
@@ -22,7 +22,7 @@
 #include "device/hid/input_service_linux.h"
 
 namespace base {
-class SingleThreadTaskRunner;
+class TaskRunner;
 }
 
 namespace device {
@@ -62,7 +62,7 @@ class BluetoothHostPairingController
   };
 
   explicit BluetoothHostPairingController(
-      const scoped_refptr<base::SingleThreadTaskRunner>& file_task_runner);
+      const scoped_refptr<base::TaskRunner>& input_service_task_runner);
   ~BluetoothHostPairingController() override;
 
   // These functions should be only used in tests.
@@ -154,8 +154,8 @@ class BluetoothHostPairingController
   std::unique_ptr<ProtoDecoder> proto_decoder_;
   TestDelegate* delegate_ = nullptr;
 
-  scoped_refptr<base::SingleThreadTaskRunner> file_task_runner_;
-  base::ThreadChecker thread_checker_;
+  scoped_refptr<base::TaskRunner> input_service_task_runner_;
+  THREAD_CHECKER(thread_checker_);
   base::ObserverList<Observer> observers_;
   base::WeakPtrFactory<BluetoothHostPairingController> ptr_factory_;