Remove calls to deprecated MessageLoop methods in components.

components/storage_monitor/storage_monitor_chromeos_unittest.cc

Index: components/storage_monitor/storage_monitor_chromeos_unittest.cc
diff --git a/components/storage_monitor/storage_monitor_chromeos_unittest.cc b/components/storage_monitor/storage_monitor_chromeos_unittest.cc
index 415f4a18eefe4a7e94d337bdbad8f56cc20d222e..4a54205ee5d0b438a2c02b4be6cd58f6920ff115 100644
--- a/components/storage_monitor/storage_monitor_chromeos_unittest.cc
+++ b/components/storage_monitor/storage_monitor_chromeos_unittest.cc
@@ -257,7 +257,7 @@ void StorageMonitorCrosTest::PostQuitToUIThread() {
 void StorageMonitorCrosTest::WaitForFileThread() {
   BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE,
                           base::Bind(&PostQuitToUIThread));
-  base::MessageLoop::current()->Run();
+  base::RunLoop().Run();
 }
 
 void StorageMonitorCrosTest::EjectNotify(StorageMonitor::EjectStatus status) {