Add a mechanism to pause and resume geolocation requests.

content/browser/geolocation/geolocation_dispatcher_host.h

Index: content/browser/geolocation/geolocation_dispatcher_host.h
diff --git a/content/browser/geolocation/geolocation_dispatcher_host.h b/content/browser/geolocation/geolocation_dispatcher_host.h
index 0631c8718f228f9fdf691218bbff6cbd9e39d999..8d34ef85bf4ccdca65e389b81aa35ccf650370db 100644
--- a/content/browser/geolocation/geolocation_dispatcher_host.h
+++ b/content/browser/geolocation/geolocation_dispatcher_host.h
@@ -19,6 +19,14 @@ class GeolocationDispatcherHost : public BrowserMessageFilter {
       int render_process_id,
       GeolocationPermissionContext* geolocation_permission_context);
 
+  // Pause or resumes geolocation for the given |render_view_id|. Should
+  // be called on the IO thread. Resuming when nothing is paused is a no-op.
+  virtual void PauseOrResume(int render_view_id, bool should_pause) = 0;
+
+  // Returns true if there are any non-paused geolocation callbacks
+  // currently registered. Should only be called on the IO thread.
+  virtual bool IsGeolocationActive() = 0;
+
  protected:
   GeolocationDispatcherHost();
   virtual ~GeolocationDispatcherHost();