Delete geofencing implementation.

content/browser/geofencing/mock_geofencing_service.cc

-// 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.
-
-// MSVC++ requires this to be set before any other includes to get M_PI.
-#define _USE_MATH_DEFINES
-
-#include "content/browser/geofencing/mock_geofencing_service.h"
-
-#include <cmath>
-
-#include "base/bind.h"
-#include "base/location.h"
-#include "base/single_thread_task_runner.h"
-#include "base/threading/thread_task_runner_handle.h"
-#include "content/browser/geofencing/geofencing_registration_delegate.h"
-#include "third_party/WebKit/public/platform/WebCircularGeofencingRegion.h"
-
-namespace content {
-
-namespace {
-
-void RegisterRegionResult(GeofencingRegistrationDelegate* delegate,
-                          int64_t geofencing_registration_id,
-                          GeofencingStatus status) {
-  base::ThreadTaskRunnerHandle::Get()->PostTask(
-      FROM_HERE,
-      base::Bind(&GeofencingRegistrationDelegate::RegistrationFinished,
-                 base::Unretained(delegate), geofencing_registration_id,
-                 status));
-}
-
-double DegreesToRadians(float degrees) {
-  return (M_PI * degrees) / 180.f;
-}
-
-double Haversin(double theta) {
-  double temp = sin(theta / 2);
-  return temp * temp;
-}
-
-// Calculates the distance in meters between two points with coordinates in
-// degrees.
-double Distance(double lat1, double long1, double lat2, double long2) {
-  double R = 6371000;  // radius of earth in meters
-  double phi1 = DegreesToRadians(lat1);
-  double phi2 = DegreesToRadians(lat2);
-  double dphi = DegreesToRadians(lat2 - lat1);
-  double dlambda = DegreesToRadians(long2 - long1);
-  double haversine = Haversin(dphi) + cos(phi1) * cos(phi2) * Haversin(dlambda);
-  return 2 * R * asin(sqrt(haversine));
-}
-
-// Returns true iff the provided coordinate is inside the region.
-bool PositionInRegion(double latitude,
-                      double longitude,
-                      const blink::WebCircularGeofencingRegion& region) {
-  return Distance(latitude, longitude, region.latitude, region.longitude) <=
-         region.radius;
-}
-}
-
-struct MockGeofencingService::Registration {
-  blink::WebCircularGeofencingRegion region;
-  GeofencingRegistrationDelegate* delegate;
-  // True iff the last event emitted for this region was a RegionEntered event.
-  bool is_inside;
-};
-
-MockGeofencingService::MockGeofencingService(bool service_available)
-    : available_(service_available),
-      next_id_(0),
-      has_position_(false),
-      last_latitude_(0),
-      last_longitude_(0) {
-}
-
-MockGeofencingService::~MockGeofencingService() {
-}
-
-void MockGeofencingService::SetMockPosition(double latitude, double longitude) {
-  has_position_ = true;
-  last_latitude_ = latitude;
-  last_longitude_ = longitude;
-  for (auto& registration : registrations_) {
-    bool is_inside =
-        PositionInRegion(latitude, longitude, registration.second.region);
-    if (is_inside != registration.second.is_inside) {
-      if (is_inside)
-        registration.second.delegate->RegionEntered(registration.first);
-      else
-        registration.second.delegate->RegionExited(registration.first);
-    }
-    registration.second.is_inside = is_inside;
-  }
-}
-
-bool MockGeofencingService::IsServiceAvailable() {
-  return available_;
-}
-
-int64_t MockGeofencingService::RegisterRegion(
-    const blink::WebCircularGeofencingRegion& region,
-    GeofencingRegistrationDelegate* delegate) {
-  int64_t id = next_id_++;
-  Registration& registration = registrations_[id];
-  registration.region = region;
-  registration.delegate = delegate;
-  registration.is_inside =
-      has_position_ &&
-      PositionInRegion(last_latitude_, last_longitude_, region);
-  RegisterRegionResult(delegate, id, GEOFENCING_STATUS_OK);
-  if (registration.is_inside) {
-    base::ThreadTaskRunnerHandle::Get()->PostTask(
-        FROM_HERE, base::Bind(&GeofencingRegistrationDelegate::RegionEntered,
-                              base::Unretained(delegate), id));
-  }
-  return id;
-}
-
-void MockGeofencingService::UnregisterRegion(
-    int64_t geofencing_registration_id) {
-  registrations_.erase(geofencing_registration_id);
-}
-
-}  // namespace content