md-settings: Added settings for fingerprint unlock.

chrome/common/chrome_features.cc

Index: chrome/common/chrome_features.cc
diff --git a/chrome/common/chrome_features.cc b/chrome/common/chrome_features.cc
index 34bec2b4a485103b07b7b97d6fb8d0210a277ba3..305bc1587824539df5c60ec2c4fe78aa9e6a7769 100644
--- a/chrome/common/chrome_features.cc
+++ b/chrome/common/chrome_features.cc
@@ -227,6 +227,10 @@ const base::Feature kOptInImeMenu{"OptInImeMenu",
 const base::Feature kQuickUnlockPin{"QuickUnlockPin",
                                     base::FEATURE_DISABLED_BY_DEFAULT};
 
+// Enables or disables fingerprint unlock settings integration.
+const base::Feature kQuickUnlockFingerprint{"QuickUnlockFingerprint",
+                                            base::FEATURE_DISABLED_BY_DEFAULT};
+
 // Enables or disables emoji, handwriting and voice input on opt-in IME menu.
 const base::Feature kEHVInputOnImeMenu{"EmojiHandwritingVoiceInput",
                                        base::FEATURE_DISABLED_BY_DEFAULT};