Makes use of EngineGeolocationFeature weak_ptr threadsafe.

blimp/engine/feature/geolocation/mock_blimp_location_provider_delegate.h

 // Copyright 2016 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 BLIMP_ENGINE_FEATURE_GEOLOCATION_MOCK_BLIMP_LOCATION_PROVIDER_DELEGATE_H_
 #define BLIMP_ENGINE_FEATURE_GEOLOCATION_MOCK_BLIMP_LOCATION_PROVIDER_DELEGATE_H_
 
 #include "blimp/engine/feature/geolocation/blimp_location_provider.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
 namespace blimp {
 namespace engine {
 
 class MockBlimpLocationProviderDelegate
     : public BlimpLocationProvider::Delegate {
  public:
   MockBlimpLocationProviderDelegate();
   ~MockBlimpLocationProviderDelegate();
 
   base::WeakPtr<MockBlimpLocationProviderDelegate> GetWeakPtr() {
     return weak_factory_.GetWeakPtr();
   }
 
   MOCK_METHOD1(RequestAccuracy,
                void(GeolocationSetInterestLevelMessage::Level level));
   MOCK_METHOD0(OnPermissionGranted, void());
-  MOCK_METHOD1(
+  MOCK_METHOD2(
       SetUpdateCallback,
-      void(const base::Callback<void(const device::Geoposition&)>& callback));
+      void(scoped_refptr<base::SingleThreadTaskRunner> caller_task_runner,
+           const base::Callback<void(const device::Geoposition&)>& callback));
 
  private:
   base::WeakPtrFactory<MockBlimpLocationProviderDelegate> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MockBlimpLocationProviderDelegate);
 };
 
 }  // namespace engine
 }  // namespace blimp
 
 #endif  // BLIMP_ENGINE_FEATURE_GEOLOCATION_MOCK_BLIMP_LOCATION_PROVIDER_DELEGATE_H_