[update_engine] Update to use not-hideously-old logging API from chrome

gzip.cc

 // Copyright (c) 2009 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 "update_engine/gzip.h"
 #include <stdlib.h>
 #include <algorithm>
 #include <zlib.h>
-#include "chromeos/obsolete_logging.h"
+#include "base/logging.h"
 #include "update_engine/utils.h"
 
 using std::max;
 using std::string;
 using std::vector;
 
 namespace chromeos_update_engine {
 
 bool GzipDecompressData(const char* const in, const size_t in_size,
                         char** out, size_t* out_size) {
@@ skipping 156 matching lines @@
   char* out_buf;
   size_t out_size;
   TEST_AND_RETURN_FALSE(GzipDecompressData(str.data(), str.size(),
                                             &out_buf, &out_size));
   out->insert(out->end(), out_buf, out_buf + out_size);
   free(out_buf);
   return true;
 }
 
 } // namespace chromeos_update_engine