Update logging.cc
Update logging.cc
yvxiang/dfs,yvxiang/dfs,imotai/bfs,imotai/bfs,yvxiang/coverage_for_bfs,yvxiang/coverage_for_bfs,bluebore/dfs,baidu/bfs,lylei/dfs,yvxiang/dfs,linyvxiang/dfs,yvxiang/dfs,bluebore/bfs,myawan/bfs-1,myawan/bfs-1,00k/ToyDFS,lylei/dfs,bluebore/bfs,linyvxiang/dfs,lylei/dfs,imotai/bfs,yvxiang/coverage_for_bfs,baidu/bfs,yvxiang/coverage_for_bfs,linyvxiang/dfs,myawan/bfs-1,baidu/bfs,lylei/dfs,00k/ToyDFS,bluebore/dfs,bluebore/dfs,bluebore/bfs,myawan/bfs-1,baidu/bfs