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

BUG=None
TEST=compile

Change-Id: Ieed8952b6806a72b59e16c1579f7293b6a98157a

Review URL: http://codereview.chromium.org/3170010
diff --git a/libcurl_http_fetcher.h b/libcurl_http_fetcher.h
index b0cac28..66c1117 100644
--- a/libcurl_http_fetcher.h
+++ b/libcurl_http_fetcher.h
@@ -10,7 +10,7 @@
 #include <curl/curl.h>
 #include <glib.h>
 #include "base/basictypes.h"
-#include "chromeos/obsolete_logging.h"
+#include "base/logging.h"
 #include "update_engine/http_fetcher.h"
 
 // This is a concrete implementation of HttpFetcher that uses libcurl to do the