Add Yandex referral ID to search URL.

components/search_engines/template_url.cc

Index: components/search_engines/template_url.cc
diff --git a/components/search_engines/template_url.cc b/components/search_engines/template_url.cc
index b4fb151639c6799de44dc0008764ebc6a051e3c2..9df068a86b6effb4dae55137b48df4a9d0bd4800 100644
--- a/components/search_engines/template_url.cc
+++ b/components/search_engines/template_url.cc
@@ -649,6 +649,8 @@ bool TemplateURLRef::ParseParameter(size_t start,
     replacements->push_back(Replacement(GOOGLE_SUGGEST_REQUEST_ID, start));
   } else if (parameter == kGoogleUnescapedSearchTermsParameter) {
     replacements->push_back(Replacement(GOOGLE_UNESCAPED_SEARCH_TERMS, start));
+  } else if (parameter == "yandex:referralID") {
+    replacements->push_back(Replacement(YANDEX_REFERRAL_ID, start));
   } else if (parameter == "yandex:searchPath") {
     switch (ui::GetDeviceFormFactor()) {
       case ui::DEVICE_FORM_FACTOR_DESKTOP:
@@ -1125,6 +1127,13 @@ std::string TemplateURLRef::HandleReplacements(
 #endif
         break;
 
+      case YANDEX_REFERRAL_ID: {
+        std::string referral_id = search_terms_data.GetYandexReferralID();
+        if (!referral_id.empty())
+          HandleReplacement("clid", referral_id, *i, &url);
+        break;
+      }
+
       default:
         NOTREACHED();
         break;