Move core pieces of geolocation from chrome to content....

chrome/browser/geolocation/gps_location_provider_linux.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.
-
-// This file declares GPS providers that run on linux. Currently, just uses
-// the libgps (gpsd) API. Public for testing only - for normal usage this
-// header should not be required, as location_provider.h declares the needed
-// factory function.
-
-#ifndef CHROME_BROWSER_GEOLOCATION_GPS_LOCATION_PROVIDER_LINUX_H_
-#define CHROME_BROWSER_GEOLOCATION_GPS_LOCATION_PROVIDER_LINUX_H_
-#pragma once
-
-#include "base/scoped_ptr.h"
-#include "base/task.h"
-#include "chrome/browser/geolocation/location_provider.h"
-#include "chrome/common/geoposition.h"
-
-class LibGps;
-
-// Location provider for Linux, that uses libgps/gpsd to obtain position fixes.
-// TODO(joth): Currently this runs entirely in the client thread (i.e. Chrome's
-// IO thread). As the older libgps API is not designed to support polling,
-// there's a chance it could block, so better move this into its own worker
-// thread.
-class GpsLocationProviderLinux : public LocationProviderBase {
- public:
-  typedef LibGps* (*LibGpsFactory)();
-  // |factory| will be used to create the gpsd client library wrapper. (Note
-  // NewSystemLocationProvider() will use the default factory).
-  explicit GpsLocationProviderLinux(LibGpsFactory libgps_factory);
-  virtual ~GpsLocationProviderLinux();
-
-  // LocationProvider
-  virtual bool StartProvider(bool high_accuracy);
-  virtual void StopProvider();
-  virtual void GetPosition(Geoposition* position);
-  virtual void UpdatePosition();
-  virtual void OnPermissionGranted(const GURL& requesting_frame);
-
- private:
-  // Task which run in the child thread.
-  void DoGpsPollTask();
-
-  // Will schedule a poll; i.e. enqueue DoGpsPollTask deferred task.
-  void ScheduleNextGpsPoll(int interval);
-
-  const LibGpsFactory libgps_factory_;
-  scoped_ptr<LibGps> gps_;
-  Geoposition position_;
-
-  // Holder for the tasks which run on the thread; takes care of cleanup.
-  ScopedRunnableMethodFactory<GpsLocationProviderLinux> task_factory_;
-};
-
-#endif  // CHROME_BROWSER_GEOLOCATION_GPS_LOCATION_PROVIDER_LINUX_H_