Clear SDCH information on "Clear browsing data" path.

net/filter/sdch_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.
 
 #include "net/filter/sdch_filter.h"
 
 #include <ctype.h>
 #include <limits.h>
 
 #include <algorithm>
@@ skipping 318 matching lines @@
   }
   dictionary_hash_.append(next_stream_data_, bytes_needed);
   DCHECK(kServerIdLength == dictionary_hash_.size());
   stream_data_len_ -= bytes_needed;
   DCHECK_LE(0, stream_data_len_);
   if (stream_data_len_ > 0)
     next_stream_data_ += bytes_needed;
   else
     next_stream_data_ = NULL;
 
-  DCHECK(!dictionary_.get());
+  DCHECK(!dictionary_);
   dictionary_hash_is_plausible_ = true;  // Assume plausible, but check.
 
-  SdchManager::Dictionary* dictionary = NULL;
   if ('\0' == dictionary_hash_[kServerIdLength - 1]) {
     SdchManager* manager(url_request_context_->sdch_manager());
     manager->GetVcdiffDictionary(
         std::string(dictionary_hash_, 0, kServerIdLength - 1),
-        url_, &dictionary);
+        url_, &dictionary_);
   } else {
     dictionary_hash_is_plausible_ = false;
   }
 
-  if (!dictionary) {
+  if (!dictionary_) {
     DCHECK(dictionary_hash_.size() == kServerIdLength);
     // Since dictionary was not found, check to see if hash was even plausible.
     for (size_t i = 0; i < kServerIdLength - 1; ++i) {
       char base64_char = dictionary_hash_[i];
       if (!isalnum(base64_char) && '-' != base64_char && '_' != base64_char) {
         dictionary_hash_is_plausible_ = false;
         break;
       }
     }
     if (dictionary_hash_is_plausible_)
       SdchManager::SdchErrorRecovery(SdchManager::DICTIONARY_HASH_NOT_FOUND);
     else
       SdchManager::SdchErrorRecovery(SdchManager::DICTIONARY_HASH_MALFORMED);
     decoding_status_ = DECODING_ERROR;
     return FILTER_ERROR;
   }
-  dictionary_ = dictionary;
   vcdiff_streaming_decoder_.reset(new open_vcdiff::VCDiffStreamingDecoder);
   vcdiff_streaming_decoder_->SetAllowVcdTarget(false);
   vcdiff_streaming_decoder_->StartDecoding(dictionary_->text().data(),
                                            dictionary_->text().size());
   decoding_status_ = DECODING_IN_PROGRESS;
   return FILTER_OK;
 }
 
 int SdchFilter::OutputBufferExcess(char* const dest_buffer,
                                    size_t available_space) {
   if (dest_buffer_excess_.empty())
     return 0;
   DCHECK(dest_buffer_excess_.size() > dest_buffer_excess_index_);
   size_t amount = std::min(available_space,
       dest_buffer_excess_.size() - dest_buffer_excess_index_);
   memcpy(dest_buffer, dest_buffer_excess_.data() + dest_buffer_excess_index_,
          amount);
   dest_buffer_excess_index_ += amount;
   if (dest_buffer_excess_.size() <= dest_buffer_excess_index_) {
     DCHECK(dest_buffer_excess_.size() == dest_buffer_excess_index_);
     dest_buffer_excess_.clear();
     dest_buffer_excess_index_ = 0;
   }
   return amount;
 }
 
 }  // namespace net