Reject unadvertised encodings

net/filter/filter_source_stream.h

Index: net/filter/filter_source_stream.h
diff --git a/net/filter/filter_source_stream.h b/net/filter/filter_source_stream.h
index 3d24bd1a92116f0079702c16436a2ed334753ce0..4855dfc089d454fbcd484d70b67cce5aea11fe4a 100644
--- a/net/filter/filter_source_stream.h
+++ b/net/filter/filter_source_stream.h
@@ -38,6 +38,10 @@ class NET_EXPORT_PRIVATE FilterSourceStream : public SourceStream {
 
   std::string Description() const override;
 
+  static SourceType ParseEncodingType(const std::string& encoding);
+
+  static void ReportContentDecodingFailed(SourceType type);
+
  private:
   enum State {
     STATE_NONE,