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

delta_diff_generator_unittest.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 <sys/types.h>
 #include <sys/stat.h>
 #include <fcntl.h>
 #include <unistd.h>
 #include <set>
 #include <string>
 #include <utility>
 #include <vector>
 #include <gtest/gtest.h>
-#include "chromeos/obsolete_logging.h"
+#include "base/logging.h"
 #include "update_engine/cycle_breaker.h"
 #include "update_engine/delta_diff_generator.h"
 #include "update_engine/delta_performer.h"
 #include "update_engine/graph_types.h"
 #include "update_engine/graph_utils.h"
 #include "update_engine/subprocess.h"
 #include "update_engine/test_utils.h"
 #include "update_engine/utils.h"
 
 using std::make_pair;
@@ skipping 317 matching lines @@
   EXPECT_EQ(0, manifest.install_operations(0).data_offset());
   EXPECT_EQ(3, manifest.install_operations(0).data_length());
   EXPECT_EQ(3, manifest.install_operations(1).data_offset());
   EXPECT_EQ(1, manifest.install_operations(1).data_length());
   
   unlink(orig_blobs.c_str());
   unlink(new_blobs.c_str());
 }
 
 }  // namespace chromeos_update_engine