Revert of Reland: Geolocation: move from content/browser to device/

device/geolocation/geolocation_service_context.h

-// Copyright 2014 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 DEVICE_GEOLOCATION_GEOLOCATION_SERVICE_CONTEXT_H_
-#define DEVICE_GEOLOCATION_GEOLOCATION_SERVICE_CONTEXT_H_
-
-#include "base/macros.h"
-#include "base/memory/scoped_vector.h"
-#include "device/geolocation/geolocation_export.h"
-#include "third_party/WebKit/public/platform/modules/geolocation/geolocation.mojom.h"
-
-namespace device {
-
-class GeolocationServiceImpl;
-struct Geoposition;
-
-// Provides information to a set of GeolocationServiceImpl instances that are
-// associated with a given context. Notably, allows pausing and resuming
-// geolocation on these instances.
-class DEVICE_GEOLOCATION_EXPORT GeolocationServiceContext {
- public:
-  GeolocationServiceContext();
-  virtual ~GeolocationServiceContext();
-
-  // Creates a GeolocationServiceImpl that is weakly bound to |request|.
-  // |update_callback| will be called when services send
-  // location updates to their clients.
-  void CreateService(
-      const base::Closure& update_callback,
-      mojo::InterfaceRequest<blink::mojom::GeolocationService> request);
-
-  // Called when a service has a connection error. After this call, it is no
-  // longer safe to access |service|.
-  void ServiceHadConnectionError(GeolocationServiceImpl* service);
-
-  // Pauses and resumes geolocation. Resuming when nothing is paused is a
-  // no-op. If a service is added while geolocation is paused, that service
-  // will not get geolocation updates until geolocation is resumed.
-  void PauseUpdates();
-  void ResumeUpdates();
-
-  // Returns whether geolocation updates are currently paused.
-  bool paused() { return paused_; }
-
-  // Enables geolocation override. This method can be used to trigger possible
-  // location-specific behavior in a particular context.
-  void SetOverride(std::unique_ptr<Geoposition> geoposition);
-
-  // Disables geolocation override.
-  void ClearOverride();
-
- private:
-  ScopedVector<GeolocationServiceImpl> services_;
-  bool paused_;
-
-  std::unique_ptr<Geoposition> geoposition_override_;
-
-  DISALLOW_COPY_AND_ASSIGN(GeolocationServiceContext);
-};
-
-}  // namespace device
-
-#endif  // DEVICE_GEOLOCATION_GEOLOCATION_SERVICE_CONTEXT_H_