Implement "streaming" $i18n{} replacer

net/filter/filter.cc

 // Copyright 2014 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.
 
 // The basic usage of the Filter interface is described in the comment at
 // the beginning of filter.h. If Filter::Factory is passed a vector of
 // size greater than 1, that interface is implemented by a series of filters
 // connected in a chain. In such a case the first filter
 // in the chain proxies calls to ReadData() so that its return values
 // apply to the entire chain.
@@ skipping 323 matching lines @@
 
 std::string Filter::OrderedFilterList() const {
   if (next_filter_) {
     return FilterTypeAsString(type_id_) + "," +
         next_filter_->OrderedFilterList();
   } else {
     return FilterTypeAsString(type_id_);
   }
 }
 
+void Filter::TakeNextFilter(std::unique_ptr<Filter> next_filter) {
+  next_filter_ = std::move(next_filter);
+}
+
 Filter::Filter(FilterType type_id)
     : stream_buffer_(nullptr),
       stream_buffer_size_(0),
       next_stream_data_(nullptr),
       stream_data_len_(0),
       last_status_(FILTER_NEED_MORE_DATA),
       type_id_(type_id) {}
 
 Filter::FilterStatus Filter::CopyOut(char* dest_buffer, int* dest_len) {
   int out_len;
@@ skipping 88 matching lines @@
 
 void Filter::PushDataIntoNextFilter() {
   IOBuffer* next_buffer = next_filter_->stream_buffer();
   int next_size = next_filter_->stream_buffer_size();
   last_status_ = ReadFilteredData(next_buffer->data(), &next_size);
   if (FILTER_ERROR != last_status_)
     next_filter_->FlushStreamBuffer(next_size);
 }
 
 }  // namespace net