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

mock_http_fetcher.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 "update_engine/mock_http_fetcher.h"
 #include <algorithm>
-#include "chromeos/obsolete_logging.h"
+#include "base/logging.h"
 
 // This is a mac implementation of HttpFetcher which is useful for testing.
 
 using std::min;
 
 namespace chromeos_update_engine {
 
 MockHttpFetcher::~MockHttpFetcher() {
   CHECK(!timeout_source_) << "Call TerminateTransfer() before dtor.";
 }
@@ skipping 75 matching lines @@
 
 void MockHttpFetcher::Unpause() {
   CHECK(paused_) << "You must pause before unpause.";
   paused_ = false;
   if (sent_size_ < data_.size()) {
     SendData(false);
   }
 }
 
 }  // namespace chromeos_update_engine