Remove calls to deprecated MessageLoop methods in chromeos.

chromeos/geolocation/simple_geolocation_unittest.cc

Index: chromeos/geolocation/simple_geolocation_unittest.cc
diff --git a/chromeos/geolocation/simple_geolocation_unittest.cc b/chromeos/geolocation/simple_geolocation_unittest.cc
index 93ff93eba967824c648167a3e875000b1d07b228..d18502ec4195f43f9ecde93677f0404f0354c449 100644
--- a/chromeos/geolocation/simple_geolocation_unittest.cc
+++ b/chromeos/geolocation/simple_geolocation_unittest.cc
@@ -341,7 +341,7 @@ class SimpleGeolocationWiFiTest : public ::testing::TestWithParam<bool> {
     ASSERT_TRUE(manager_test_);
     geolocation_handler_.reset(new GeolocationHandler());
     geolocation_handler_->Init();
-    message_loop_.RunUntilIdle();
+    base::RunLoop().RunUntilIdle();
   }
 
   void TearDown() override {
@@ -367,7 +367,7 @@ class SimpleGeolocationWiFiTest : public ::testing::TestWithParam<bool> {
     properties.SetStringWithoutPathExpansion(shill::kGeoSignalStrengthProperty,
                                              strength);
     manager_test_->AddGeoNetwork(shill::kTypeWifi, properties);
-    message_loop_.RunUntilIdle();
+    base::RunLoop().RunUntilIdle();
   }
 
  protected:
@@ -408,10 +408,10 @@ TEST_P(SimpleGeolocationWiFiTest, WiFiExists) {
 
   // Add an acces point.
   AddAccessPoint(1);
-  message_loop_.RunUntilIdle();
+  base::RunLoop().RunUntilIdle();
   // Inititial call should return false and request access points.
   EXPECT_FALSE(GetWifiAccessPoints());
-  message_loop_.RunUntilIdle();
+  base::RunLoop().RunUntilIdle();
   // Second call should return true since we have an access point.
   EXPECT_TRUE(GetWifiAccessPoints());
   ASSERT_EQ(1u, wifi_access_points_.size());