[components/storage_monitor] Use ThreadTaskRunnerHandle instead of LoopProxy

components/storage_monitor/storage_monitor_linux_unittest.cc

Index: components/storage_monitor/storage_monitor_linux_unittest.cc
diff --git a/components/storage_monitor/storage_monitor_linux_unittest.cc b/components/storage_monitor/storage_monitor_linux_unittest.cc
index 3e77145f9a5f07198d8ad4666c3c711ba74c5cd5..710b7c45319de8881b2a2b0b53a4d2ae5848cb51 100644
--- a/components/storage_monitor/storage_monitor_linux_unittest.cc
+++ b/components/storage_monitor/storage_monitor_linux_unittest.cc
@@ -17,6 +17,7 @@
 #include "base/memory/scoped_ptr.h"
 #include "base/run_loop.h"
 #include "base/strings/utf_string_conversions.h"
+#include "base/thread_task_runner_handle.h"
 #include "components/storage_monitor/mock_removable_storage_observer.h"
 #include "components/storage_monitor/removable_device_constants.h"
 #include "components/storage_monitor/storage_info.h"
@@ -132,7 +133,7 @@ class TestStorageMonitorLinux : public StorageMonitorLinux {
   void UpdateMtab(
       const MtabWatcherLinux::MountPointDeviceMap& new_mtab) override {
     StorageMonitorLinux::UpdateMtab(new_mtab);
-    base::MessageLoopProxy::current()->PostTask(
+    base::ThreadTaskRunnerHandle::Get()->PostTask(
         FROM_HERE, base::MessageLoop::QuitClosure());
   }