[Password Autofill] Make better use of prefilled usernames.

components/autofill/content/renderer/password_autofill_agent.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef COMPONENTS_AUTOFILL_CONTENT_RENDERER_PASSWORD_AUTOFILL_AGENT_H_
 #define COMPONENTS_AUTOFILL_CONTENT_RENDERER_PASSWORD_AUTOFILL_AGENT_H_
 
 #include <map>
 #include <vector>
 
@@ skipping 89 matching lines @@
   void SendPasswordForms(WebKit::WebFrame* frame, bool only_visible);
 
   void GetSuggestions(const PasswordFormFillData& fill_data,
                       const base::string16& input,
                       std::vector<base::string16>* suggestions,
                       std::vector<base::string16>* realms);
 
   bool ShowSuggestionPopup(const PasswordFormFillData& fill_data,
                            const WebKit::WebInputElement& user_input);
 
+  // Attempts to fill |username_element| and |password_element| with the
+  // |fill_data|.  Will use the data corresponding to the preferred username,
+  // unless the |username_element| already has a value set.  In that case,
+  // attempts to fill the password matching the already filled username, if
+  // such a password exists.
+  void FillFormOnPasswordRecieved(const PasswordFormFillData& fill_data,
+                                  WebKit::WebInputElement username_element,
+                                  WebKit::WebInputElement password_element);
+
   bool FillUserNameAndPassword(
       WebKit::WebInputElement* username_element,
       WebKit::WebInputElement* password_element,
       const PasswordFormFillData& fill_data,
       bool exact_username_match,
       bool set_selection);
 
   // Fills |login_input| and |password| with the most relevant suggestion from
   // |fill_data| and shows a popup with other suggestions.
   void PerformInlineAutocomplete(
@@ skipping 24 matching lines @@
   FrameToPasswordFormMap provisionally_saved_forms_;
 
   base::WeakPtrFactory<PasswordAutofillAgent> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PasswordAutofillAgent);
 };
 
 }  // namespace autofill
 
 #endif  // COMPONENTS_AUTOFILL_CONTENT_RENDERER_PASSWORD_AUTOFILL_AGENT_H_