Revert 76228 - Move core pieces of geolocation from chrome to content.This is...

content/browser/geolocation/geolocation_observer.h

-// Copyright (c) 2010 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_GEOLOCATION_GEOLOCATION_OBSERVER_H_
-#define CONTENT_BROWSER_GEOLOCATION_GEOLOCATION_OBSERVER_H_
-#pragma once
-
-#include "base/basictypes.h"
-
-struct Geoposition;
-
-// This interface is implemented by observers of GeolocationProvider as
-// well as GeolocationProvider itself as an observer of GeolocationArbitrator.
-class GeolocationObserver {
- public:
-  // This will be called whenever the 'best available' location is updated,
-  // or when an error is encountered meaning no location data will be
-  // available in the forseeable future.
-  virtual void OnLocationUpdate(const Geoposition& position) = 0;
-
- protected:
-  GeolocationObserver() {}
-  virtual ~GeolocationObserver() {}
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(GeolocationObserver);
-};
-
-struct GeolocationObserverOptions {
-  GeolocationObserverOptions() : use_high_accuracy(false) {}
-  explicit GeolocationObserverOptions(bool high_accuracy)
-      : use_high_accuracy(high_accuracy) {}
-
-  // Given a map<ANYTHING, GeolocationObserverOptions> this function will
-  // iterate the map and collapse all the options found to a single instance
-  // that satisfies them all.
-  template <typename MAP>
-  static GeolocationObserverOptions Collapse(const MAP& options_map) {
-    for (typename MAP::const_iterator it = options_map.begin();
-         it != options_map.end(); ++it) {
-      if (it->second.use_high_accuracy)
-        return GeolocationObserverOptions(true);
-    }
-    return GeolocationObserverOptions(false);
-  }
-
-  bool use_high_accuracy;
-};
-
-#endif  // CONTENT_BROWSER_GEOLOCATION_GEOLOCATION_OBSERVER_H_