FaviconDownloaderCallback   17 chrome/browser/extensions/favicon_downloader.cc   FaviconDownloaderCallback callback)
FaviconDownloaderCallback   39 chrome/browser/extensions/favicon_downloader.h                     FaviconDownloaderCallback callback);
FaviconDownloaderCallback   94 chrome/browser/extensions/favicon_downloader.h   FaviconDownloaderCallback callback_;