[iOS] Upstream fork in template_url.cc

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 8c565f285cfd548bb472decb5b8c79d4a82efa05..33bee0ac5257b9f07bcc9f3e041286a2902f3745 100644
--- a/components/search_engines/template_url.cc
+++ b/components/search_engines/template_url.cc
@@ -672,7 +672,7 @@ bool TemplateURLRef::ParseParameter(size_t start,
   } else if (parameter == kGoogleSessionToken) {
     replacements->push_back(Replacement(GOOGLE_SESSION_TOKEN, start));
   } else if (parameter == kGoogleSourceIdParameter) {
-#if defined(OS_ANDROID)
+#if defined(OS_ANDROID) || defined(OS_IOS)
     url->insert(start, "sourceid=chrome-mobile&");
 #else
     url->insert(start, "sourceid=chrome&");