Delete geofencing implementation.

content/browser/geofencing/geofencing_service.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 CONTENT_BROWSER_GEOFENCING_GEOFENCING_SERVICE_H_
-#define CONTENT_BROWSER_GEOFENCING_GEOFENCING_SERVICE_H_
-
-#include <stdint.h>
-
-#include <map>
-#include <memory>
-
-#include "base/compiler_specific.h"
-#include "base/macros.h"
-#include "content/common/content_export.h"
-#include "content/common/geofencing_types.h"
-
-namespace base {
-template <typename T>
-struct DefaultSingletonTraits;
-}
-
-namespace blink {
-struct WebCircularGeofencingRegion;
-};
-
-namespace content {
-
-class GeofencingProvider;
-class GeofencingRegistrationDelegate;
-
-// This interface exists primarily to facilitate testing of classes that depend
-// on GeofencingService. It defines the interface exposed by
-// |GeofencingService|.
-class GeofencingService {
- public:
-  virtual ~GeofencingService() {}
-
-  // Returns if a geofencing service is available.
-  virtual bool IsServiceAvailable() = 0;
-
-  // Register a region. This returns a unique registration ID, and
-  // asynchronously calls the |delegate|s RegistrationFinished method to
-  // inform the delegate of the result of the attempt to register the region.
-  // This does not transfer ownership of the |delegate|. Callers have to ensure
-  // that the delegate remains valid as long as the region is registered.
-  virtual int64_t RegisterRegion(
-      const blink::WebCircularGeofencingRegion& region,
-      GeofencingRegistrationDelegate* delegate) = 0;
-
-  // Unregister a region. This is assumed to always succeed. It is safe to call
-  // this even if a registration is still in progress.
-  virtual void UnregisterRegion(int64_t geofencing_registration_id) = 0;
-};
-
-// This class combines all the geofence registrations from the various per
-// storage partition |GeofencingManager| instances, and registers a subset
-// of those fences with an underlying platform specific |GeofencingProvider|.
-// TODO(mek): Limit the number of geofences that are registered with the
-// underlying GeofencingProvider.
-class CONTENT_EXPORT GeofencingServiceImpl
-    : NON_EXPORTED_BASE(public GeofencingService) {
- public:
-  // Gets a pointer to the singleton instance of the geofencing service. This
-  // must only be called on the IO thread so that the GeofencingService is
-  // always instantiated on the same thread. Ownership is NOT returned.
-  static GeofencingServiceImpl* GetInstance();
-
-  // GeofencingServiceInterface implementation.
-  bool IsServiceAvailable() override;
-  int64_t RegisterRegion(const blink::WebCircularGeofencingRegion& region,
-                         GeofencingRegistrationDelegate* delegate) override;
-  void UnregisterRegion(int64_t geofencing_registration_id) override;
-
- protected:
-  friend class GeofencingServiceTest;
-  friend struct base::DefaultSingletonTraits<GeofencingServiceImpl>;
-  GeofencingServiceImpl();
-  ~GeofencingServiceImpl() override;
-
-  void SetProviderForTesting(std::unique_ptr<GeofencingProvider> provider);
-  int RegistrationCountForTesting();
-
- private:
-  struct Registration;
-  typedef std::map<int64_t, Registration> RegistrationsMap;
-
-  // This method checks if a |GeofencingProvider| exists, creates a new one if
-  // not, and finally returns false if it can't create a provider for the
-  // current platform.
-  bool EnsureProvider();
-
-  // Returns a new unique ID to use for the next geofence registration.
-  int64_t GetNextId();
-
-  // Notifies the correct delegate that registration has completed for a
-  // specific geofence registration.
-  void NotifyRegistrationFinished(int64_t geofencing_registration_id,
-                                  GeofencingStatus status);
-
-  int64_t next_registration_id_;
-  RegistrationsMap registrations_;
-  std::unique_ptr<GeofencingProvider> provider_;
-
-  DISALLOW_COPY_AND_ASSIGN(GeofencingServiceImpl);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_GEOFENCING_GEOFENCING_SERVICE_H_