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 381b61d5030d321b6f9d3db6baefe03a7be6ce38..da4756e85b113178cacd1091773a3e00416c8b0f 100644
--- a/chrome/common/chrome_features.cc
+++ b/chrome/common/chrome_features.cc
@@ -223,6 +223,10 @@ 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};

[jdufault, 2016/12/02 23:02:12]

You need to also add an entry in about_flags.cc so this will show up in
chrome://flags

[sammiequon, 2016/12/03 21:40:51]

Done.

+
 // Enables or disables emoji, handwriting and voice input on opt-in IME menu.
 const base::Feature kEHVInputOnImeMenu{"EmojiHandwritingVoiceInput",
                                        base::FEATURE_DISABLED_BY_DEFAULT};