Make nesting/running states a RunLoop rather than a MessageLoop concept.

device/bluetooth/bluez/bluetooth_adapter_profile_bluez_unittest.cc

Index: device/bluetooth/bluez/bluetooth_adapter_profile_bluez_unittest.cc
diff --git a/device/bluetooth/bluez/bluetooth_adapter_profile_bluez_unittest.cc b/device/bluetooth/bluez/bluetooth_adapter_profile_bluez_unittest.cc
index 779e9b702e72f3a23339c1193c8f863a3d5562ab..bc8d0c10df5f7d3105a34b6636e1f394c1f492cb 100644
--- a/device/bluetooth/bluez/bluetooth_adapter_profile_bluez_unittest.cc
+++ b/device/bluetooth/bluez/bluetooth_adapter_profile_bluez_unittest.cc
@@ -78,10 +78,8 @@ class BluetoothAdapterProfileBlueZTest : public testing::Test {
 
   void AdapterCallback(scoped_refptr<BluetoothAdapter> adapter) {
     adapter_ = adapter;
-    if (base::MessageLoop::current() &&
-        base::MessageLoop::current()->is_running()) {
+    if (base::RunLoop::IsRunningOnCurrentThread())
       base::MessageLoop::current()->QuitWhenIdle();
-    }
   }
 
   class FakeDelegate : public bluez::BluetoothProfileServiceProvider::Delegate {