Adds an IOSWebViewTypeParam() method to SearchTermsData.

components/search_engines/search_terms_data.cc

Index: components/search_engines/search_terms_data.cc
diff --git a/components/search_engines/search_terms_data.cc b/components/search_engines/search_terms_data.cc
index e8abc03d36dd457eab34d4c76409b12a3c5e392d..be897db754e21d09333ba37dcae03712337eec83 100644
--- a/components/search_engines/search_terms_data.cc
+++ b/components/search_engines/search_terms_data.cc
@@ -76,6 +76,10 @@ std::string SearchTermsData::NTPIsThemedParam() const {
   return std::string();
 }
 
+std::string SearchTermsData::IOSWebViewTypeParam() const {
+  return std::string();
+}
+
 std::string SearchTermsData::GoogleImageSearchSource() const {
   return std::string();
 }