Remove ZLib codec support from chromoting host and client.

remoting/base/decompressor_zlib.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 "remoting/base/decompressor_zlib.h"
-
-#if defined(USE_SYSTEM_ZLIB)
-#include <zlib.h>
-#else
-#include "third_party/zlib/zlib.h"
-#endif
-#include "base/logging.h"
-
-namespace remoting {
-
-DecompressorZlib::DecompressorZlib() {
-  InitStream();
-}
-
-DecompressorZlib::~DecompressorZlib() {
-  inflateEnd(stream_.get());
-}
-
-void DecompressorZlib::Reset() {
-  inflateEnd(stream_.get());
-  InitStream();
-}
-
-bool DecompressorZlib::Process(const uint8* input_data, int input_size,
-                               uint8* output_data, int output_size,
-                               int* consumed, int* written) {
-  DCHECK_GT(output_size, 0);
-
-  // Setup I/O parameters.
-  stream_->avail_in = input_size;
-  stream_->next_in = (Bytef*)input_data;
-  stream_->avail_out = output_size;
-  stream_->next_out = (Bytef*)output_data;
-
-  int ret = inflate(stream_.get(), Z_NO_FLUSH);
-  if (ret == Z_STREAM_ERROR) {
-    NOTREACHED() << "zlib compression failed";
-  }
-
-  *consumed = input_size - stream_->avail_in;
-  *written = output_size - stream_->avail_out;
-
-  // Since we check that output is always greater than 0, the only
-  // reason for us to get Z_BUF_ERROR is when zlib requires more input
-  // data.
-  return ret == Z_OK || ret == Z_BUF_ERROR;
-}
-
-void DecompressorZlib::InitStream() {
-  stream_.reset(new z_stream());
-
-  stream_->next_in = Z_NULL;
-  stream_->zalloc = Z_NULL;
-  stream_->zfree = Z_NULL;
-  stream_->opaque = Z_NULL;
-
-  int ret = inflateInit(stream_.get());
-  DCHECK_EQ(ret, Z_OK);
-}
-
-}  // namespace remoting