Add HTTP-specific metrics for password forms

components/password_manager/core/browser/password_manager_client.cc

Index: components/password_manager/core/browser/password_manager_client.cc
diff --git a/components/password_manager/core/browser/password_manager_client.cc b/components/password_manager/core/browser/password_manager_client.cc
index d25ab2c115a8b2cdad92018e626fcf9b7faa7233..2c51dc644cc947684d79666d083286d936b0d589 100644
--- a/components/password_manager/core/browser/password_manager_client.cc
+++ b/components/password_manager/core/browser/password_manager_client.cc
@@ -68,6 +68,10 @@ const GURL& PasswordManagerClient::GetMainFrameURL() const {
   return GURL::EmptyGURL();
 }
 
+bool PasswordManagerClient::IsMainFrameSecure() const {
+  return false;
+}
+
 const LogManager* PasswordManagerClient::GetLogManager() const {
   return nullptr;
 }