Add mojo::StrongBindingSet and use it in GeolocationServiceContext.

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"
-#include "content/public/common/mojo_geoposition.mojom.h"
-#include "mojo/public/cpp/bindings/binding.h"
+#include "content/public/browser/geolocation_provider.h"
 
 #ifndef CONTENT_BROWSER_GEOLOCATION_GEOLOCATION_SERVICE_IMPL_H_
 #define CONTENT_BROWSER_GEOLOCATION_GEOLOCATION_SERVICE_IMPL_H_
 
 namespace content {
-
-class GeolocationProvider;
 class GeolocationServiceContext;
+struct Geoposition;
+class RenderFrameHost;
 
 // Implements the GeolocationService Mojo interface.
 class GeolocationServiceImpl : public GeolocationService {
  public:
-  // |context| must outlive this object. |update_callback| will be called when
-  // location updates are sent, allowing the client to know when the service
-  // is being used.
-  GeolocationServiceImpl(mojo::InterfaceRequest<GeolocationService> request,
-                         GeolocationServiceContext* context,
-                         const base::Closure& update_callback);
+  // |context| must outlive this object.
+  GeolocationServiceImpl(GeolocationServiceContext* context,
+                         RenderFrameHost* render_frame_host);
   ~GeolocationServiceImpl() override;
 
   // Starts listening for updates.
   void StartListeningForUpdates();
 
   // Pauses and resumes sending updates to the client of this instance.
   void PauseUpdates();
   void ResumeUpdates();
 
   // Enables and disables geolocation override.
-  void SetOverride(const Geoposition& position);
+  void OnOverrideSet();
   void ClearOverride();
 
  private:
-  typedef mojo::Callback<void(MojoGeopositionPtr)> PositionCallback;
+  using PositionCallback = QueryNextPositionCallback;
 
   // GeolocationService:
   void SetHighAccuracy(bool high_accuracy) override;
   void QueryNextPosition(const PositionCallback& callback) override;
 
-  void OnConnectionError();
-
   void OnLocationUpdate(const Geoposition& position);
   void ReportCurrentPosition();
 
-  // The binding between this object and the other end of the pipe.
-  mojo::Binding<GeolocationService> binding_;
+  void ReportPermissionUsage();
 
   // Owns this object.
-  GeolocationServiceContext* context_;
+  GeolocationServiceContext* const context_;
+  const int render_process_id_;
+  const int render_frame_id_;
   scoped_ptr<GeolocationProvider::Subscription> geolocation_subscription_;
 
-  // Callback that allows the instantiator of this class to be notified on
-  // position updates.
-  base::Closure update_callback_;
-
   // The callback passed to QueryNextPosition.
   PositionCallback position_callback_;
 
-  // Valid iff SetOverride() has been called and ClearOverride() has not
-  // subsequently been called.
-  Geoposition position_override_;
-
-  MojoGeoposition current_position_;
+  MojoGeopositionPtr current_position_;
 
   // Whether this instance is currently observing location updates with high
   // accuracy.
   bool high_accuracy_;
 
-  bool has_position_to_report_;
-
   DISALLOW_COPY_AND_ASSIGN(GeolocationServiceImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_GEOLOCATION_GEOLOCATION_SERVICE_IMPL_H_