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| 1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef CHROME_BROWSER_GEOLOCATION_EMPTY_DEVICE_DATA_PROVIDER_H_ | 5 #ifndef CONTENT_BROWSER_GEOLOCATION_EMPTY_DEVICE_DATA_PROVIDER_H_ |
| 6 #define CHROME_BROWSER_GEOLOCATION_EMPTY_DEVICE_DATA_PROVIDER_H_ | 6 #define CONTENT_BROWSER_GEOLOCATION_EMPTY_DEVICE_DATA_PROVIDER_H_ |
| 7 #pragma once | 7 #pragma once |
| 8 | 8 |
| 9 #include "chrome/browser/geolocation/device_data_provider.h" | 9 #include "content/browser/geolocation/device_data_provider.h" |
| 10 | 10 |
| 11 // An implementation of DeviceDataProviderImplBase that does not provide any | 11 // An implementation of DeviceDataProviderImplBase that does not provide any |
| 12 // data. Used on platforms where a given data type is not available. | 12 // data. Used on platforms where a given data type is not available. |
| 13 | 13 |
| 14 template<typename DataType> | 14 template<typename DataType> |
| 15 class EmptyDeviceDataProvider : public DeviceDataProviderImplBase<DataType> { | 15 class EmptyDeviceDataProvider : public DeviceDataProviderImplBase<DataType> { |
| 16 public: | 16 public: |
| 17 EmptyDeviceDataProvider() {} | 17 EmptyDeviceDataProvider() {} |
| 18 virtual ~EmptyDeviceDataProvider() {} | 18 virtual ~EmptyDeviceDataProvider() {} |
| 19 | 19 |
| 20 // DeviceDataProviderImplBase implementation | 20 // DeviceDataProviderImplBase implementation |
| 21 virtual bool StartDataProvider() { return true; } | 21 virtual bool StartDataProvider() { return true; } |
| 22 virtual void StopDataProvider() { } | 22 virtual void StopDataProvider() { } |
| 23 virtual bool GetData(DataType *data) { | 23 virtual bool GetData(DataType *data) { |
| 24 DCHECK(data); | 24 DCHECK(data); |
| 25 // This is all the data we can get - nothing. | 25 // This is all the data we can get - nothing. |
| 26 return true; | 26 return true; |
| 27 } | 27 } |
| 28 | 28 |
| 29 private: | 29 private: |
| 30 DISALLOW_COPY_AND_ASSIGN(EmptyDeviceDataProvider); | 30 DISALLOW_COPY_AND_ASSIGN(EmptyDeviceDataProvider); |
| 31 }; | 31 }; |
| 32 | 32 |
| 33 #endif // CHROME_BROWSER_GEOLOCATION_EMPTY_DEVICE_DATA_PROVIDER_H_ | 33 #endif // CONTENT_BROWSER_GEOLOCATION_EMPTY_DEVICE_DATA_PROVIDER_H_ |
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