Remove calls to deprecated MessageLoop methods on Windows and Linux.

components/arc/arc_bridge_service_unittest.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <memory>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/run_loop.h"
+#include "base/single_thread_task_runner.h"
 #include "chromeos/dbus/dbus_thread_manager.h"
 #include "components/arc/arc_bridge_service_impl.h"
 #include "components/arc/test/fake_arc_bridge_bootstrap.h"
 #include "components/arc/test/fake_arc_bridge_instance.h"
 #include "mojo/public/cpp/system/message_pipe.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace arc {
 
 namespace {
 
 class DummyObserver : public ArcBridgeService::Observer {};
 
 }  // namespace
 
 class ArcBridgeTest : public testing::Test, public ArcBridgeService::Observer {
  public:
   ArcBridgeTest() : ready_(false) {}
   ~ArcBridgeTest() override {}
 
   void OnBridgeReady() override {
     state_ = ArcBridgeService::State::READY;
     ready_ = true;
   }
 
   void OnBridgeStopped(ArcBridgeService::StopReason stop_reason) override {
     state_ = ArcBridgeService::State::STOPPED;
     stop_reason_ = stop_reason;
-    message_loop_.PostTask(FROM_HERE, message_loop_.QuitWhenIdleClosure());
+    message_loop_.task_runner()->PostTask(FROM_HERE,
+                                          message_loop_.QuitWhenIdleClosure());
   }
 
   bool ready() const { return ready_; }
   ArcBridgeService::State state() const { return state_; }
 
  protected:
   std::unique_ptr<ArcBridgeServiceImpl> service_;
   std::unique_ptr<FakeArcBridgeInstance> instance_;
   ArcBridgeService::StopReason stop_reason_;
 
@@ skipping 110 matching lines @@
 }
 
 // Removing an unknown observer should be allowed.
 TEST_F(ArcBridgeTest, RemoveUnknownObserver) {
   ASSERT_FALSE(ready());
   auto dummy_observer = base::MakeUnique<DummyObserver>();
   service_->RemoveObserver(dummy_observer.get());
 }
 
 }  // namespace arc