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

omaha_hash_calculator.cc

 // Copyright (c) 2009 The Chromium OS 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 <openssl/bio.h>
 #include <openssl/buffer.h>
 #include <openssl/evp.h>
-#include "chromeos/obsolete_logging.h"
+#include "base/logging.h"
 #include "update_engine/omaha_hash_calculator.h"
 
 namespace chromeos_update_engine {
 
 OmahaHashCalculator::OmahaHashCalculator() {
   CHECK_EQ(SHA1_Init(&ctx_), 1);
 }
 
 // Update is called with all of the data that should be hashed in order.
 // Mostly just passes the data through to OpenSSL's SHA1_Update()
@@ skipping 39 matching lines @@
     const std::string& str) {
   return OmahaHashOfBytes(str.data(), str.size());
 }
 
 std::string OmahaHashCalculator::OmahaHashOfData(
     const std::vector<char>& data) {
   return OmahaHashOfBytes(&data[0], data.size());
 }
 
 }  // namespace chromeos_update_engine