Reject unadvertised encodings

net/filter/filter_source_stream.h

 // Copyright 2016 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 NET_FILTER_FILTER_SOURCE_STREAM_H_
 #define NET_FILTER_FILTER_SOURCE_STREAM_H_
 
 #include <memory>
 #include <string>
 
@@ skipping 20 matching lines @@
   FilterSourceStream(SourceType type, std::unique_ptr<SourceStream> upstream);
 
   ~FilterSourceStream() override;
 
   int Read(IOBuffer* read_buffer,
            int read_buffer_size,
            const CompletionCallback& callback) override;
 
   std::string Description() const override;
 
+  static SourceType ParseEncodingType(const std::string& encoding);
+
+  static void ReportContentDecodingFailed(SourceType type);
+
  private:
   enum State {
     STATE_NONE,
     // Reading data from |upstream_| into |input_buffer_|.
     STATE_READ_DATA,
     // Reading data from |upstream_| completed.
     STATE_READ_DATA_COMPLETE,
     // Filtering data contained in |input_buffer_|.
     STATE_FILTER_DATA,
     // Filtering data contained in |input_buffer_| completed.
@@ skipping 59 matching lines @@
 
   // Reading from |upstream_| has returned 0 byte or an error code.
   bool upstream_end_reached_;
 
   DISALLOW_COPY_AND_ASSIGN(FilterSourceStream);
 };
 
 }  // namespace net
 
 #endif  // NET_FILTER_FILTER_SOURCE_STREAM_H_