Partially convert geolocation IPC to Mojo.

content/browser/geolocation/geolocation_service_context.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.
+
+#ifndef CONTENT_BROWSER_GEOLOCATION_GEOLOCATION_SERVICE_CONTEXT_H_
+#define CONTENT_BROWSER_GEOLOCATION_GEOLOCATION_SERVICE_CONTEXT_H_
+
+#include "base/memory/scoped_vector.h"
+#include "content/browser/geolocation/geolocation_service_impl.h"
+
+namespace content {
+
+// Provides information to a set of GeolocationServiceImpl instances that are
+// associated with a given context. Notably, allows pausing and resuming
+// geolocation on these instances.
+class GeolocationServiceContext {
+ public:
+  GeolocationServiceContext();
+  virtual ~GeolocationServiceContext();
+
+  // Creates a GeolocationServiceImpl that is weakly bound to |request|.
+  // |update_callback| will be called when services send
+  // location updates to their clients.
+  void CreateService(const base::Closure& update_callback,
+                     mojo::InterfaceRequest<GeolocationService> request);
+
+  // Called when a service has a connection error. After this call, it is no
+  // longer safe to access |service|.
+  void ServiceHadConnectionError(GeolocationServiceImpl* service);
+
+  // Pauses and resumes geolocation. Resuming when nothing is paused is a
+  // no-op. If a service is added while geolocation is paused, that service
+  // will not get geolocation updates until geolocation is resumed.
+  void PauseUpdates();
+  void ResumeUpdates();
+
+  // Returns whether geolocation updates are currently paused.
+  bool paused() { return paused_; }
+
+  // Enables geolocation override. This method can be used to trigger possible
+  // location-specific behavior in a particular context.
+  void SetOverride(scoped_ptr<Geoposition> geoposition);
+
+  // Disables geolocation override.
+  void ClearOverride();
+
+ private:
+  ScopedVector<GeolocationServiceImpl> services_;
+  bool paused_;
+
+  scoped_ptr<Geoposition> geoposition_override_;
+
+  DISALLOW_COPY_AND_ASSIGN(GeolocationServiceContext);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_GEOLOCATION_GEOLOCATION_SERVICE_CONTEXT_H_