Rewrite scoped_ptr<T>(NULL) to use the default ctor in net/.

net/base/sdch_filter.cc

 // Copyright (c) 2011 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/base/sdch_filter.h"
 
 #include <limits.h>
 #include <ctype.h>
 #include <algorithm>
 
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "net/base/sdch_manager.h"
 
 #include "sdch/open-vcdiff/src/google/vcdecoder.h"
 
 namespace net {
 
 SdchFilter::SdchFilter(const FilterContext& filter_context)
     : filter_context_(filter_context),
       decoding_status_(DECODING_UNINITIALIZED),
-      vcdiff_streaming_decoder_(NULL),
       dictionary_hash_(),
       dictionary_hash_is_plausible_(false),
       dictionary_(NULL),
       dest_buffer_excess_(),
       dest_buffer_excess_index_(0),
       source_bytes_(0),
       output_bytes_(0),
       possible_pass_through_(false) {
   bool success = filter_context.GetMimeType(&mime_type_);
   DCHECK(success);
@@ skipping 347 matching lines @@
   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