media: Generalize MediaPermissionDispatcher.

content/renderer/media/media_permission_dispatcher.h

Index: content/renderer/media/media_permission_dispatcher.h
diff --git a/content/renderer/media/media_permission_dispatcher.h b/content/renderer/media/media_permission_dispatcher.h
index e2466cb762a87c9ccd20b353f1c691ad896ea385..d9734eda1b85bd4aaaa8543bcf68c87cc1db4d81 100644
--- a/content/renderer/media/media_permission_dispatcher.h
+++ b/content/renderer/media/media_permission_dispatcher.h
@@ -20,12 +20,14 @@ class SingleThreadTaskRunner;
 
 namespace content {
 
-// MediaPermission implementation in content. This class is not thread safe
-// and should only be used on one thread.
-class CONTENT_EXPORT MediaPermissionDispatcher : public media::MediaPermission,
-                                                 public RenderFrameObserver {
+// MediaPermission implementation.
+class CONTENT_EXPORT MediaPermissionDispatcher : public media::MediaPermission {
  public:
-  explicit MediaPermissionDispatcher(RenderFrame* render_frame);
+  using ConnectToServiceCB =
+      base::Callback<void(mojo::InterfaceRequest<PermissionService>)>;
+
+  explicit MediaPermissionDispatcher(
+      const ConnectToServiceCB& connect_to_service_cb);
   ~MediaPermissionDispatcher() override;
 
   // media::MediaPermission implementation.
@@ -50,6 +52,7 @@ class CONTENT_EXPORT MediaPermissionDispatcher : public media::MediaPermission,
   // Callback for |permission_service_| calls.
   void OnPermissionStatus(uint32_t request_id, PermissionStatus status);
 
+  ConnectToServiceCB connect_to_service_cb_;
   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
   uint32_t next_request_id_;
   RequestMap requests_;