Remove the GoogleURLTracker infobar functionality entirely.

components/google/core/browser/google_pref_names.cc

Index: components/google/core/browser/google_pref_names.cc
diff --git a/components/google/core/browser/google_pref_names.cc b/components/google/core/browser/google_pref_names.cc
index 81e6749d4812cd1484d151f7c0061a0bace2ffe1..eeb8de180524f3685e6d0c26d7eba6760d3c19ba 100644
--- a/components/google/core/browser/google_pref_names.cc
+++ b/components/google/core/browser/google_pref_names.cc
@@ -11,10 +11,4 @@ namespace prefs {
 // correct Google domain/country code for whatever location the user is in.
 const char kLastKnownGoogleURL[] = "browser.last_known_google_url";
 
-// String containing the last prompted Google URL to the user.
-// If the user is using .x TLD for Google URL and gets prompted about .y TLD
-// for Google URL, and says "no", we should leave the search engine set to .x
-// but not prompt again until the domain changes away from .y.
-const char kLastPromptedGoogleURL[] = "browser.last_prompted_google_url";
-
 }  // namespace prefs