Make chrome communicate with gpsd through libgps/shared memory

content/browser/geolocation/libgps_2_94_wrapper_linux.cc

-// Copyright (c) 2011 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.
-
-// Defines a variant of libgps wrapper for use with the 2.94 release of the API.
-
-#include "content/browser/geolocation/libgps_wrapper_linux.h"
-
-#include "base/logging.h"
-#include "content/common/geoposition.h"
-#include "third_party/gpsd/release-2.94/gps.h"
-
-class LibGpsV294 : public LibGps {
- public:
-  explicit LibGpsV294(LibGpsLibraryWrapper* dl_wrapper) : LibGps(dl_wrapper) {}
-
-  // LibGps
-  virtual bool StartStreaming() {
-    return library().stream(WATCH_ENABLE) == 0;
-  }
-  virtual bool DataWaiting() {
-    return library().waiting();
-  }
-  virtual bool GetPositionIfFixed(Geoposition* position) {
-    // This function is duplicated between the library versions, however it
-    // cannot be shared as each one must be strictly compiled against the
-    // corresponding version of gps.h.
-    DCHECK(position);
-    const gps_data_t& gps_data = library().data();
-    if (gps_data.status == STATUS_NO_FIX)
-      return false;
-    position->latitude = gps_data.fix.latitude;
-    position->longitude = gps_data.fix.longitude;
-    position->accuracy = std::max(gps_data.fix.epx, gps_data.fix.epy);
-    if (position->accuracy != position->accuracy) {
-      // TODO(joth): Fixme. This is a workaround for http://crbug.com/99326
-      LOG(WARNING) << "libgps reported accuracy NaN, forcing to zero";
-      position->accuracy = 0;
-    }
-    position->altitude = gps_data.fix.altitude;
-    position->altitude_accuracy = gps_data.fix.epv;
-    position->heading = gps_data.fix.track;
-    position->speed = gps_data.fix.speed;
-    return true;
-  }
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(LibGpsV294);
-};
-
-LibGps* LibGps::NewV294(LibGpsLibraryWrapper* dl_wrapper) {
-  return new LibGpsV294(dl_wrapper);
-}