Partially convert geolocation IPC to Mojo.

content/browser/geolocation/geolocation_dispatcher_host.h

 // Copyright (c) 2012 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_DISPATCHER_HOST_H_
 #define CONTENT_BROWSER_GEOLOCATION_GEOLOCATION_DISPATCHER_HOST_H_
 
 #include <map>
 #include <vector>
 
 #include "base/callback_forward.h"
 #include "base/memory/weak_ptr.h"
 #include "content/browser/geolocation/geolocation_provider_impl.h"
 #include "content/public/browser/web_contents_observer.h"
 
 class GURL;
 
 namespace content {
 
-// GeolocationDispatcherHost is an observer for Geolocation messages.
-// It's the complement of GeolocationDispatcher (owned by RenderView).
+// GeolocationDispatcherHost is an observer for Geolocation permissions-related
+// messages. In this role, it's the complement of GeolocationDispatcher (owned
+// by RenderFrame).
+// TODO(blundell): Eliminate this class in favor of having
+// Mojo handle permissions for geolocation once there is resolution on how
+// that will work. crbug.com/420498
 class GeolocationDispatcherHost : public WebContentsObserver {

[Michael van Ouwerkerk, 2014/10/08 14:43:02]

Heads up: changing this class conflicts with pending change
https://codereview.chromium.org/603323004/

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

Acknowledged.

  public:
   explicit GeolocationDispatcherHost(WebContents* web_contents);
   virtual ~GeolocationDispatcherHost();
 
-  // Pause or resumes geolocation. Resuming when nothing is paused is a no-op.
-  // If the web contents is paused while not currently using geolocation but
-  // then goes on to do so before being resumed, then it will not get
-  // geolocation updates until it is resumed.
-  void PauseOrResume(bool should_pause);
-
  private:
   // WebContentsObserver
-  virtual void RenderFrameDeleted(RenderFrameHost* render_frame_host) OVERRIDE;
-  virtual void RenderViewHostChanged(RenderViewHost* old_host,
-                                     RenderViewHost* new_host) OVERRIDE;
   virtual bool OnMessageReceived(
       const IPC::Message& msg, RenderFrameHost* render_frame_host) OVERRIDE;
 
   // Message handlers:
   void OnRequestPermission(RenderFrameHost* render_frame_host,
                            int bridge_id,
                            const GURL& requesting_frame,
                            bool user_gesture);
   void OnCancelPermissionRequest(RenderFrameHost* render_frame_host,
                                  int bridge_id,
                                  const GURL& requesting_frame);
-  void OnStartUpdating(RenderFrameHost* render_frame_host,
-                       const GURL& requesting_frame,
-                       bool enable_high_accuracy);
-  void OnStopUpdating(RenderFrameHost* render_frame_host);
-
-  // Updates the geolocation provider with the currently required update
-  // options.
-  void RefreshGeolocationOptions();
-
-  void OnLocationUpdate(const Geoposition& position);
 
   void SendGeolocationPermissionResponse(int render_process_id,
                                          int render_frame_id,
                                          int bridge_id,
                                          bool allowed);
 
-  // A map from the RenderFrameHosts that have requested geolocation updates to
-  // the type of accuracy they requested (true = high accuracy).
-  std::map<RenderFrameHost*, bool> updating_frames_;
-  bool paused_;
-
   struct PendingPermission {
     PendingPermission(int render_frame_id,
                       int render_process_id,
                       int bridge_id);
     ~PendingPermission();
     int render_frame_id;
     int render_process_id;
     int bridge_id;
   };
   std::vector<PendingPermission> pending_permissions_;
 
-  scoped_ptr<GeolocationProvider::Subscription> geolocation_subscription_;
-
   base::WeakPtrFactory<GeolocationDispatcherHost> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(GeolocationDispatcherHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_GEOLOCATION_GEOLOCATION_DISPATCHER_HOST_H_