content/browser/device_orientation/data_fetcher.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_BROWSER_DEVICE_ORIENTATION_DATA_FETCHER_H_
   6 #define CONTENT_BROWSER_DEVICE_ORIENTATION_DATA_FETCHER_H_
   7
   8 #include "content/browser/device_orientation/device_data.h"
   9
  10 namespace content {
  11
  12 class DataFetcher {
  13  public:
  14   virtual ~DataFetcher() {}
  15
  16   // Returns NULL if there was a fatal error getting the device data of this
  17   // type or if this fetcher can never provide this type of data. Otherwise,
  18   // returns a pointer to a DeviceData containing the most recent data.
  19   virtual const DeviceData* GetDeviceData(DeviceData::Type type) = 0;
  20 };
  21
  22 }  // namespace content
  23
  24 #endif  // CONTENT_BROWSER_DEVICE_ORIENTATION_DATA_FETCHER_H_