Added the AutomaticProfileResetter service.

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 0cbd0be1dc3be36b4977185e20f0fde5ace2131c..9dcc41bff6d23b85f42ac667f09f9c5816c2a3d2 100644
--- a/chrome/common/pref_names.cc
+++ b/chrome/common/pref_names.cc
@@ -1252,6 +1252,11 @@ extern const char kFullscreenAllowed[] = "fullscreen.allowed";
 const char kLocalDiscoveryNotificationsEnabled[] =
     "local_discovery.notifications_enabled";
 
+// 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";
+
 // *************** LOCAL STATE ***************
 // These are attached to the machine/installation