Fill on account select in the password manager

components/autofill/content/renderer/password_autofill_agent.h

Index: components/autofill/content/renderer/password_autofill_agent.h
diff --git a/components/autofill/content/renderer/password_autofill_agent.h b/components/autofill/content/renderer/password_autofill_agent.h
index b5fc205a04f729538bef11bfaf94368f76ee5078..e12ab2258c59438771ab9d0fab5f7d808c67a250 100644
--- a/components/autofill/content/renderer/password_autofill_agent.h
+++ b/components/autofill/content/renderer/password_autofill_agent.h
@@ -90,6 +90,12 @@ class PasswordAutofillAgent : public content::RenderViewObserver {
     RESTRICTION_NON_EMPTY_PASSWORD
   };
 
+  enum FillUserNameAndPasswordOptions {
+    EXACT_USERNAME_MATCH = 1 << 0,
+    SET_SELECTION = 1 << 1,
+    FILL_PREFERRED_USERNAME = 1 << 2
+  };
+
   struct PasswordInfo {
     blink::WebInputElement password_field;
     PasswordFormFillData fill_data;
@@ -170,11 +176,12 @@ class PasswordAutofillAgent : public content::RenderViewObserver {
                                   blink::WebInputElement username_element,
                                   blink::WebInputElement password_element);
 
+  // options_mask should be a bitwise mask of FillUserNameAndPasswordOptions
+  // values.
   bool FillUserNameAndPassword(blink::WebInputElement* username_element,
                                blink::WebInputElement* password_element,
                                const PasswordFormFillData& fill_data,
-                               bool exact_username_match,
-                               bool set_selection);
+                               const int options_mask);
 
   // Fills |login_input| and |password| with the most relevant suggestion from
   // |fill_data| and shows a popup with other suggestions.