Fix TemplateUrl::MatchesData comparison of search_terms_replacement_key (reland)

components/google/core/browser/google_util.h

Index: components/google/core/browser/google_util.h
diff --git a/components/google/core/browser/google_util.h b/components/google/core/browser/google_util.h
index 53e58bc0e85e2f5699d02b557172eae04bfdd261..d2526b22b381cbef561d025069b9ddf5a0142fdc 100644
--- a/components/google/core/browser/google_util.h
+++ b/components/google/core/browser/google_util.h
@@ -24,6 +24,11 @@ bool HasGoogleSearchQueryParam(base::StringPiece str);
 // The query key that identifies a Google Extended API request for Instant.
 const char kInstantExtendedAPIParam[] = "espv";
 
+constexpr char kGoogleInstantExtendedEnabledKey[] =
+    "google:instantExtendedEnabledKey";
+constexpr char kGoogleInstantExtendedEnabledKeyFull[] =
+    "{google:instantExtendedEnabledKey}";
+
 GURL LinkDoctorBaseURL();
 void SetMockLinkDoctorBaseURLForTesting();