Partially convert geolocation IPC to Mojo.

content/browser/geolocation/geolocation_service_impl_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_IMPL_CONTEXT_H_
+#define CONTENT_BROWSER_GEOLOCATION_GEOLOCATION_SERVICE_IMPL_CONTEXT_H_
+
+#include <list>
+
+namespace content {
+class GeolocationServiceImpl;
+
+// 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 GeolocationServiceImplContext {

[Michael van Ouwerkerk, 2014/10/08 14:13:08]

Would it be ok to just call this GeolocationServiceContext?

[blundell, 2014/10/09 08:32:52]

Done.

+ public:
+  GeolocationServiceImplContext();
+  virtual ~GeolocationServiceImplContext();
+
+  // Adds and removes a service to this context.
+  void AddService(GeolocationServiceImpl* service);
+  void RemoveService(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_; }
+
+ private:
+  std::list<GeolocationServiceImpl*> attached_services_;

[Michael van Ouwerkerk, 2014/10/08 14:13:08]

Nit: just 'services_' seems sufficient.

[Michael van Ouwerkerk, 2014/10/08 14:13:08]

As these are raw pointers, can you document who owns the services?

[blundell, 2014/10/09 08:32:52]

I changed the ownership model so that this class owns the services. I think it's
cleaner and easier to understand now.

[blundell, 2014/10/09 08:32:52]

Done.

+  bool paused_;
+};

[Michael van Ouwerkerk, 2014/10/08 14:13:08]

Does this need DISALLOW_COPY_AND_ASSIGN?

[blundell, 2014/10/09 08:32:52]

Done.

+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_GEOLOCATION_GEOLOCATION_SERVICE_IMPL_CONTEXT_H_