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

components/password_manager/content/browser/content_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_CONTENT_BROWSER_CONTENT_PASSWORD_MANAGER_DRIVER_H_
 #define COMPONENTS_PASSWORD_MANAGER_CONTENT_BROWSER_CONTENT_PASSWORD_MANAGER_DRIVER_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "components/autofill/core/common/password_form_field_prediction_map.h"
@@ skipping 41 matching lines @@
   void AccountCreationFormsFound(
       const std::vector<autofill::FormData>& forms) override;
   void AutofillDataReceived(
       const std::map<autofill::FormData,
                      autofill::PasswordFormFieldPredictionMap>& predictions)
       override;
   void GeneratedPasswordAccepted(const base::string16& password) override;
   void FillSuggestion(const base::string16& username,
                       const base::string16& password) override;
   void PreviewSuggestion(const base::string16& username,
-                         const base::string16& password) override;
+                         const base::string16& password,
+                         size_t match_start) override;
   void ClearPreviewedForm() override;
   void ForceSavePassword() override;
 
   PasswordGenerationManager* GetPasswordGenerationManager() override;
   PasswordManager* GetPasswordManager() override;
   PasswordAutofillManager* GetPasswordAutofillManager() override;
 
   bool HandleMessage(const IPC::Message& message);
   void DidNavigateFrame(const content::LoadCommittedDetails& details,
                         const content::FrameNavigateParams& params);
@@ skipping 19 matching lines @@
   // the latter two classes can reference to the same instance without sending
   // it to each other over IPC. The counter below is used to generate new IDs.
   int next_free_key_;
 
   DISALLOW_COPY_AND_ASSIGN(ContentPasswordManagerDriver);
 };
 
 }  // namespace password_manager
 
 #endif  // COMPONENTS_PASSWORD_MANAGER_CONTENT_BROWSER_CONTENT_PASSWORD_MANAGER_DRIVER_H_