Partially convert geolocation IPC to Mojo.

content/browser/geolocation/geolocation_service_impl.h

+// 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.
+
+#include "base/memory/scoped_ptr.h"
+#include "content/browser/geolocation/geolocation_provider_impl.h"
+#include "content/common/geolocation_service.mojom.h"
+
+#ifndef CONTENT_BROWSER_GEOLOCATION_GEOLOCATION_SERVICE_IMPL_H_
+#define CONTENT_BROWSER_GEOLOCATION_GEOLOCATION_SERVICE_IMPL_H_
+
+namespace content {
+
+class GeolocationProvider;
+class GeolocationServiceImplContext;
+
+// Implements the GeolocationService Mojo interface.
+class GeolocationServiceImpl : public mojo::InterfaceImpl<GeolocationService> {
+ public:
+  // |context| is the geolocation context in which created services should
+  // operate. |on_location_update_callback| will be called when services send
+  // location updates to their clients.
+  static void Create(GeolocationServiceImplContext* context,
+                     const base::Closure& on_location_update_callback,
+                     mojo::InterfaceRequest<GeolocationService> request);
+
+  // Pauses and resumes sending updates to the client of this instance.
+  void PauseUpdates();
+  void ResumeUpdates();
+
+  // Called when the geolocation context associated with this object is
+  // destroyed.
+  void ContextDestroyed();
+
+ private:
+  GeolocationServiceImpl(GeolocationServiceImplContext* context,
+                         const base::Closure& on_location_update_callback);
+  virtual ~GeolocationServiceImpl();
+
+  // GeolocationService:
+  virtual void StartUpdating(bool high_accuracy) OVERRIDE;
+
+  void StartListeningForUpdates();
+  void OnLocationUpdate(const Geoposition& position);
+
+  // Will not necessarily outlive this object, but will call ContextDestroyed()
+  // before going away. After a call to ContextDestroyed(), |context_| can no
+  // longer safely be accessed.
+  GeolocationServiceImplContext* context_;
+  scoped_ptr<GeolocationProvider::Subscription> geolocation_subscription_;
+  base::Closure on_location_update_callback_;
+
+  // Whether this instance is currently observing location updates with high
+  // accuracy.
+  bool high_accuracy_;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_GEOLOCATION_GEOLOCATION_SERVICE_IMPL_H_