Fix uninitialized fields in hpack code.

net/spdy/hpack/hpack_decoder.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/spdy/hpack/hpack_decoder.h"
 
 #include <utility>
 
 #include "base/logging.h"
 #include "net/spdy/hpack/hpack_constants.h"
 #include "net/spdy/hpack/hpack_entry.h"
 #include "net/spdy/spdy_flags.h"
 
 namespace net {
 
 using base::StringPiece;
 using std::string;
 
 HpackDecoder::HpackDecoder()
     : handler_(nullptr),
       total_header_bytes_(0),
       total_parsed_bytes_(0),
-      header_block_started_(false) {}
+      header_block_started_(false),
+      size_updates_seen_(0),
+      size_updates_allowed_(true),
+      incremental_decode_(false) {}
+
 
 HpackDecoder::~HpackDecoder() {}
 
 void HpackDecoder::ApplyHeaderTableSizeSetting(size_t size_setting) {
   header_table_.SetSettingsHeaderTableSize(size_setting);
 }
 
 void HpackDecoder::HandleControlFrameHeadersStart(
     SpdyHeadersHandlerInterface* handler) {
   handler_ = handler;
@@ skipping 233 matching lines @@
   } else if (input_stream->MatchPrefixAndConsume(
                  kStringLiteralIdentityEncoded)) {
     return input_stream->DecodeNextIdentityString(output);
   } else {
     DVLOG(1) << "String literal is neither Huffman nor identity encoded!";
     return false;
   }
 }
 
 }  // namespace net