A working implementation of AQS (Assisted Query Stats).

chrome/browser/search_engines/template_url.h

Index: chrome/browser/search_engines/template_url.h
diff --git a/chrome/browser/search_engines/template_url.h b/chrome/browser/search_engines/template_url.h
index 32642205a7b20e5dcf9daa91520c31c2fe391c81..d285da9ae3d17f802a590fb21d4b6eca4d5772ee 100644
--- a/chrome/browser/search_engines/template_url.h
+++ b/chrome/browser/search_engines/template_url.h
@@ -111,6 +111,10 @@ class TemplateURLRef {
   // {google:baseURL} or {google:baseSuggestURL}.
   bool HasGoogleBaseURLs() const;
 
+  // Returns true iff this TemplateURLRef has a replacement term of
+  // {goog:assistedQueryStats}.
+  bool SupportsAssistedQueryStats() const;
+
  private:
   friend class TemplateURL;
   FRIEND_TEST_ALL_PREFIXES(TemplateURLTest, SetPrepopulatedAndParse);
@@ -126,6 +130,7 @@ class TemplateURLRef {
   enum ReplacementType {
     ENCODING,
     GOOGLE_ACCEPTED_SUGGESTION,
+    GOOGLE_ASSISTED_QUERY_STATS,
     GOOGLE_BASE_URL,
     GOOGLE_BASE_SUGGEST_URL,
     GOOGLE_INSTANT_ENABLED,