Copy Smart Lock user preferences to local state so we can access them on the sign-in screen.

chrome/common/pref_names.cc

Index: chrome/common/pref_names.cc
diff --git a/chrome/common/pref_names.cc b/chrome/common/pref_names.cc
index 0246230e2f3c6bbd7ddee0f5e4077617edf32ae4..abd085f0dd0956be451ca85838f8d635cd2c8130 100644
--- a/chrome/common/pref_names.cc
+++ b/chrome/common/pref_names.cc
@@ -1224,6 +1224,12 @@ const char kEasyUnlockProximityRequired[] = "easy_unlock.proximity_required";
 // Whether to show the Easy Unlock first run tutorial.
 const char kEasyUnlockShowTutorial[] = "easy_unlock.show_tutorial";
 
+// A dictionary in local state containing each user's Easy Unlock profile
+// preferences, so they can be accessed outside of the user's profile. The value
+// is a dictionary containing an entry for each user. Each user's entry mirrors
+// their profile's Easy Unlock preferences.
+const char kEasyUnlockLocalStateUserPrefs[] = "easy_unlock.user_prefs";
+
 // A cache of zero suggest results using JSON serialized into a string.
 const char kZeroSuggestCachedResults[] = "zerosuggest.cachedresults";