Revert "content: Remove use of MessageLoopProxy and deprecated MessageLoop APIs"

content/browser/geolocation/mock_location_provider.h

 // Copyright (c) 2012 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.
 
 #ifndef CONTENT_BROWSER_GEOLOCATION_MOCK_LOCATION_PROVIDER_H_
 #define CONTENT_BROWSER_GEOLOCATION_MOCK_LOCATION_PROVIDER_H_
 
 
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
-#include "base/single_thread_task_runner.h"
 #include "base/threading/thread.h"
 #include "content/browser/geolocation/location_provider_base.h"
 #include "content/public/common/geoposition.h"
 
 namespace content {
 
 // Mock implementation of a location provider for testing.
 class MockLocationProvider : public LocationProviderBase {
  public:
   // Will update |*self_ref| to point to |this| on construction, and to NULL
   // on destruction.
   explicit MockLocationProvider(MockLocationProvider** self_ref);
   ~MockLocationProvider() override;
 
   // Updates listeners with the new position.
   void HandlePositionChanged(const Geoposition& position);
 
   // LocationProvider implementation.
   bool StartProvider(bool high_accuracy) override;
   void StopProvider() override;
   void GetPosition(Geoposition* position) override;
   void OnPermissionGranted() override;
 
   Geoposition position_;
   enum State { STOPPED, LOW_ACCURACY, HIGH_ACCURACY } state_;
   bool is_permission_granted_;
   MockLocationProvider** self_ref_;
 
-  scoped_refptr<base::SingleThreadTaskRunner> provider_task_runner_;
+  scoped_refptr<base::MessageLoopProxy> provider_loop_;
 
   // Set when an instance of the mock is created via a factory function.
   static MockLocationProvider* instance_;
 
   DISALLOW_COPY_AND_ASSIGN(MockLocationProvider);
 };
 
 // Factory functions for the various sorts of mock location providers,
 // for use with LocationArbitrator::SetProviderFactoryForTest (i.e.
 // not intended for test code to use to get access to the mock, you can use
 // MockLocationProvider::instance_ for this, or make a custom factory method).
 
 // Creates a mock location provider with no default behavior.
 LocationProvider* NewMockLocationProvider();
 // Creates a mock location provider that automatically notifies its
 // listeners with a valid location when StartProvider is called.
 LocationProvider* NewAutoSuccessMockLocationProvider();
 // Creates a mock location provider that automatically notifies its
 // listeners with an error when StartProvider is called.
 LocationProvider* NewAutoFailMockLocationProvider();
 // Similar to NewAutoSuccessMockLocationProvider but mimicks the behavior of
 // the Network Location provider, in deferring making location updates until
 // a permission request has been confirmed.
 LocationProvider* NewAutoSuccessMockNetworkLocationProvider();
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_GEOLOCATION_MOCK_LOCATION_PROVIDER_H_