components: Remove use of MessageLoopProxy and deprecated MessageLoop APIs

components/policy/core/common/policy_loader_mac_unittest.cc

Index: components/policy/core/common/policy_loader_mac_unittest.cc
diff --git a/components/policy/core/common/policy_loader_mac_unittest.cc b/components/policy/core/common/policy_loader_mac_unittest.cc
index 3fcc78502abb834702b0ba2792ab86d55c4b2cc8..ec18d311805c09ba468688d0dd664d0649bfd5bc 100644
--- a/components/policy/core/common/policy_loader_mac_unittest.cc
+++ b/components/policy/core/common/policy_loader_mac_unittest.cc
@@ -140,8 +140,8 @@ class PolicyLoaderMacTest : public PolicyTestBase {
 
   void SetUp() override {
     PolicyTestBase::SetUp();
-    scoped_ptr<AsyncPolicyLoader> loader(new PolicyLoaderMac(
-        loop_.message_loop_proxy(), base::FilePath(), prefs_));
+    scoped_ptr<AsyncPolicyLoader> loader(
+        new PolicyLoaderMac(loop_.task_runner(), base::FilePath(), prefs_));
     provider_.reset(new AsyncPolicyProvider(&schema_registry_, loader.Pass()));
     provider_->Init(&schema_registry_);
   }