cros: Replace BrowserThread::FILE in InputServiceProxy

chrome/browser/chromeos/login/hid_detection_browsertest.cc

Index: chrome/browser/chromeos/login/hid_detection_browsertest.cc
diff --git a/chrome/browser/chromeos/login/hid_detection_browsertest.cc b/chrome/browser/chromeos/login/hid_detection_browsertest.cc
index 75ad707c775e5ec45dbf0e0c9703627e38d1ed27..e83d9b1793878fa14ce9d35532aa2cd91d8ff0b5 100644
--- a/chrome/browser/chromeos/login/hid_detection_browsertest.cc
+++ b/chrome/browser/chromeos/login/hid_detection_browsertest.cc
@@ -51,7 +51,11 @@ class HidDetectionTest : public OobeBaseTest {
   typedef device::InputServiceLinux::InputDeviceInfo InputDeviceInfo;
 
   HidDetectionTest() : weak_ptr_factory_(this) {
-    InputServiceProxy::SetThreadIdForTesting(content::BrowserThread::UI);
+    task_runner_factory_ = base::Bind([]() -> scoped_refptr<base::TaskRunner> {
+      return content::BrowserThread::GetTaskRunnerForThread(
+          content::BrowserThread::UI);
+    });
+    InputServiceProxy::SetTaskRunnerFactoryForTesting(&task_runner_factory_);
     HidDetectionTest::InitInputService();
   }
 
@@ -100,7 +104,7 @@ class HidDetectionTest : public OobeBaseTest {
 
   scoped_refptr<
       testing::NiceMock<device::MockBluetoothAdapter> > mock_adapter_;
-
+  InputServiceProxy::TaskRunnerFactory task_runner_factory_;
   base::WeakPtrFactory<HidDetectionTest> weak_ptr_factory_;
 
  DISALLOW_COPY_AND_ASSIGN(HidDetectionTest);