Finch experiment for limiting the password bubble annoyance.

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 bb05c0eec19637802f072a0d12a596799722cd05..ba4e5708a6eec3d72a3762e0ba0549cf0866aff7 100644
--- a/chrome/common/pref_names.cc
+++ b/chrome/common/pref_names.cc
@@ -2279,4 +2279,14 @@ const char kBrowserAddPersonEnabled[] = "profile.add_person_enabled";
 // A dictionary that maps user id to hardlock state.
 const char kEasyUnlockHardlockState[] = "easy_unlock.hardlock_state";
 
+// The beginning of time span when we count user's "Nope" for the password
+// bubble.
+const char kPasswordBubbleTimeStamp[] = "password_bubble.timestamp";
+
+// The count of user's "Nope" for the password bubble.
+const char kPasswordBubbleNopesCount[] = "password_bubble.nopes";
+
+// Last user's interaction with the password bubble.
+const char kPasswordBubbleLastInteractions[] = "password_bubble.interactions";
+
 }  // namespace prefs