media: Add MojoCdmServiceContext.

components/html_viewer/media_factory.cc

Index: components/html_viewer/media_factory.cc
diff --git a/components/html_viewer/media_factory.cc b/components/html_viewer/media_factory.cc
index 29a153bcdb920372431b29e62ce52283f9d09e67..75a78a17ab96675be80efc91641db9f461f6ee79 100644
--- a/components/html_viewer/media_factory.cc
+++ b/components/html_viewer/media_factory.cc
@@ -156,6 +156,10 @@ media::MediaServiceProvider* MediaFactory::GetMediaServiceProvider() {
 }
 
 media::MediaPermission* MediaFactory::GetMediaPermission() {
+  // TODO(xhwang): Replace DefaultMediaPermission with something real when
+  // permissions are supported in html_viewer.
+  NOTIMPLEMENTED();
+
   if (!media_permission_)
     media_permission_.reset(new media::DefaultMediaPermission(true));
   return media_permission_.get();