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

device/bluetooth/bluez/bluetooth_gatt_bluez_unittest.cc

Index: device/bluetooth/bluez/bluetooth_gatt_bluez_unittest.cc
diff --git a/device/bluetooth/bluez/bluetooth_gatt_bluez_unittest.cc b/device/bluetooth/bluez/bluetooth_gatt_bluez_unittest.cc
index 30eed1b86ea1bb0c4c31995da4fd0c087d408e23..fb0a052b07a2c56d3e44cfd1b605d891a770272c 100644
--- a/device/bluetooth/bluez/bluetooth_gatt_bluez_unittest.cc
+++ b/device/bluetooth/bluez/bluetooth_gatt_bluez_unittest.cc
@@ -238,10 +238,8 @@ class BluetoothGattBlueZTest : 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();
-    }
   }
 
   void SuccessCallback() { ++success_callback_count_; }
@@ -281,8 +279,7 @@ class BluetoothGattBlueZTest : public testing::Test {
 
  protected:
   void QuitMessageLoop() {
-    if (base::MessageLoop::current() &&
-        base::MessageLoop::current()->is_running())
+    if (base::RunLoop::IsRunningOnCurrentThread())
       base::MessageLoop::current()->QuitWhenIdle();
   }