diff -r 000000000000 -r 6474c204b198 dom/system/qt/QTMLocationProvider.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/system/qt/QTMLocationProvider.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,101 @@
+/* -*- Mode: c++; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "QTMLocationProvider.h"
+#include "nsGeoPosition.h"
+
+using namespace mozilla;
+
+NS_IMPL_ISUPPORTS(QTMLocationProvider, nsIGeolocationProvider)
+
+QTMLocationProvider::QTMLocationProvider()
+{
+    if (QMetaType::type("QGeoPositionInfo") == QMetaType::UnknownType) {
+        qRegisterMetaType<QGeoPositionInfo>("QGeoPositionInfo");
+    }
+    mLocation = QGeoPositionInfoSource::createDefaultSource(this);
+    if (mLocation)
+        connect(mLocation, SIGNAL(positionUpdated(QGeoPositionInfo)), this, SLOT(positionUpdated(QGeoPositionInfo)));
+}
+
+QTMLocationProvider::~QTMLocationProvider()
+{
+    delete mLocation;
+}
+
+void
+QTMLocationProvider::positionUpdated(const QGeoPositionInfo &geoPosition)
+{
+    if (!geoPosition.isValid()) {
+        NS_WARNING("Invalida geoposition received");
+        return;
+    }
+
+    QGeoCoordinate coord = geoPosition.coordinate();
+    double latitude = coord.latitude();
+    double longitude = coord.longitude();
+    double altitude = coord.altitude();
+    double accuracy = geoPosition.attribute(QGeoPositionInfo::HorizontalAccuracy);
+    double altitudeAccuracy = geoPosition.attribute(QGeoPositionInfo::VerticalAccuracy);
+    double heading = geoPosition.attribute(QGeoPositionInfo::Direction);
+
+    bool providesSpeed = geoPosition.hasAttribute(QGeoPositionInfo::GroundSpeed);
+    double speed = geoPosition.attribute(QGeoPositionInfo::GroundSpeed);
+
+    nsRefPtr<nsGeoPosition> p =
+        new nsGeoPosition(latitude, longitude,
+                          altitude, accuracy,
+                          altitudeAccuracy, heading,
+                          speed, geoPosition.timestamp().toTime_t());
+    if (mCallback) {
+        mCallback->Update(p);
+    }
+}
+
+NS_IMETHODIMP
+QTMLocationProvider::Startup()
+{
+    if (!mLocation)
+        return NS_ERROR_NOT_IMPLEMENTED;
+
+    // Not all versions of qt5positioning set default prefered method
+    // thus this workaround initializing QGeoPositionSource explicitly
+    SetHighAccuracy(false);
+    mLocation->startUpdates();
+
+    return NS_OK;
+}
+
+NS_IMETHODIMP
+QTMLocationProvider::Watch(nsIGeolocationUpdate* aCallback)
+{
+    mCallback = aCallback;
+
+    return NS_OK;
+}
+
+NS_IMETHODIMP
+QTMLocationProvider::Shutdown()
+{
+    if (!mLocation)
+        return NS_ERROR_NOT_IMPLEMENTED;
+
+    mLocation->stopUpdates();
+    mCallback = nullptr;
+
+    return NS_OK;
+}
+
+NS_IMETHODIMP
+QTMLocationProvider::SetHighAccuracy(bool aHigh)
+{
+    if (!mLocation)
+        return NS_ERROR_NOT_IMPLEMENTED;
+
+    mLocation->setPreferredPositioningMethods(aHigh ?
+                                              QGeoPositionInfoSource::SatellitePositioningMethods :
+                                              QGeoPositionInfoSource::AllPositioningMethods);
+    return NS_OK;
+}