[Autofill/Autocomplete Feature] Substring matching instead of prefix matching.

components/password_manager/core/browser/password_manager_driver.h

 // Copyright 2014 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_PASSWORD_MANAGER_CORE_BROWSER_PASSWORD_MANAGER_DRIVER_H_
 #define COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_PASSWORD_MANAGER_DRIVER_H_
 
 #include <map>
 #include <vector>
 
@@ skipping 45 matching lines @@
   // Notifies the driver that the user has accepted a generated password.
   virtual void GeneratedPasswordAccepted(const base::string16& password) = 0;
 
   // Tells the driver to fill the form with the |username| and |password|.
   virtual void FillSuggestion(const base::string16& username,
                               const base::string16& password) = 0;
 
   // Tells the driver to preview filling form with the |username| and
   // |password|.
   virtual void PreviewSuggestion(const base::string16& username,
-                                 const base::string16& password) = 0;
+                                 const base::string16& password,
+                                 size_t match_start) = 0;
 
   // Tells the driver to clear previewed password and username fields.
   virtual void ClearPreviewedForm() = 0;
 
   // Tells the driver to find the focused password field and report back
   // the corresponding password form, so that it can be saved.
   virtual void ForceSavePassword() {}
 
   // Returns the PasswordGenerationManager associated with this instance.
   virtual PasswordGenerationManager* GetPasswordGenerationManager() = 0;
 
   // Returns the PasswordManager associated with this instance.
   virtual PasswordManager* GetPasswordManager() = 0;
 
   // Returns the PasswordAutofillManager associated with this instance.
   virtual PasswordAutofillManager* GetPasswordAutofillManager() = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(PasswordManagerDriver);
 };
 
 }  // namespace password_manager
 
 #endif  // COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_PASSWORD_MANAGER_DRIVER_H_