Revert "Eliminate all code related to the AutomaticProfileResetter."

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 db5d644352cbd2c527c00b58398286cdda7c0c88..0c9c9aee66e6e140c8cde03d24ba5c323d34c0dc 100644
--- a/chrome/common/pref_names.cc
+++ b/chrome/common/pref_names.cc
@@ -1230,6 +1230,11 @@ const char kLocalDiscoveryNotificationsEnabled[] =
 // a preference was reset.
 const char kPreferenceResetTime[] = "prefs.preference_reset_time";
 
+// String that indicates if the Profile Reset prompt has already been shown to
+// the user. Used both in user preferences and local state, in the latter, it is
+// actually a dictionary that maps profile keys to before-mentioned strings.
+const char kProfileResetPromptMemento[] = "profile.reset_prompt_memento";
+
 // The GCM channel's enabled state.
 const char kGCMChannelEnabled[] = "gcm.channel_enabled";