KeyChainCertSelectionCallback 258 chrome/android/java/src/org/chromium/chrome/browser/SSLClientCertificateRequest.java KeyChainCertSelectionCallback callback = KeyChainCertSelectionCallback 259 chrome/android/java/src/org/chromium/chrome/browser/SSLClientCertificateRequest.java new KeyChainCertSelectionCallback(activity.getApplicationContext(),