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

device/bluetooth/bluez/bluetooth_bluez_unittest.cc

Index: device/bluetooth/bluez/bluetooth_bluez_unittest.cc
diff --git a/device/bluetooth/bluez/bluetooth_bluez_unittest.cc b/device/bluetooth/bluez/bluetooth_bluez_unittest.cc
index 74d88017fc7f35c0de15086fa905cecdcedd8c8b..6632d545665ff191c6a3183eef6a23a3f1d8eba4 100644
--- a/device/bluetooth/bluez/bluetooth_bluez_unittest.cc
+++ b/device/bluetooth/bluez/bluetooth_bluez_unittest.cc
@@ -164,10 +164,8 @@ class TestPairingDelegate : public BluetoothDevice::PairingDelegate {
   // Some tests use a message loop since background processing is simulated;
   // break out of those loops.
   void QuitMessageLoop() {
-    if (base::MessageLoop::current() &&
-        base::MessageLoop::current()->is_running()) {
+    if (base::RunLoop::IsRunningOnCurrentThread())
       base::MessageLoop::current()->QuitWhenIdle();
-    }
   }
 };
 
@@ -362,10 +360,8 @@ class BluetoothBlueZTest : public testing::Test {
   // Some tests use a message loop since background processing is simulated;
   // break out of those loops.
   void QuitMessageLoop() {
-    if (base::MessageLoop::current() &&
-        base::MessageLoop::current()->is_running()) {
+    if (base::RunLoop::IsRunningOnCurrentThread())
       base::MessageLoop::current()->QuitWhenIdle();
-    }
   }
 };
 const char BluetoothBlueZTest::kGapUuid[] =