Add "previewing on hover" support for password field.

components/password_manager/core/browser/password_generation_manager_unittest.cc

 // 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.
 
 #include <vector>
 
 #include "base/prefs/pref_registry_simple.h"
 #include "base/prefs/pref_service.h"
 #include "base/prefs/testing_pref_service.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 42 matching lines @@
   virtual PasswordAutofillManager* GetPasswordAutofillManager() OVERRIDE {
     return &password_autofill_manager_;
   }
   virtual void AllowPasswordGenerationForForm(autofill::PasswordForm* form)
       OVERRIDE {}
   virtual void AccountCreationFormsFound(
       const std::vector<autofill::FormData>& forms) OVERRIDE {
     found_account_creation_forms_.insert(
         found_account_creation_forms_.begin(), forms.begin(), forms.end());
   }
-  virtual void AcceptPasswordAutofillSuggestion(
-      const base::string16& username,
-      const base::string16& password) OVERRIDE {
-  }
+  virtual void FillSuggestion(const base::string16& username,
+                              const base::string16& password) OVERRIDE {}
+  virtual void PreviewSuggestion(const base::string16& username,
+                                 const base::string16& password) OVERRIDE {}
+  virtual void ClearPreviewedForm() OVERRIDE {}
 
   const std::vector<autofill::FormData>& GetFoundAccountCreationForms() {
     return found_account_creation_forms_;
   }
   void set_is_off_the_record(bool is_off_the_record) {
     is_off_the_record_ = is_off_the_record;
   }
 
  private:
   PasswordManager password_manager_;
@@ skipping 148 matching lines @@
   // be disabled.
   GetTestDriver()->set_is_off_the_record(true);
   PrefService* prefs = client_->GetPrefs();
   prefs->SetBoolean(prefs::kPasswordManagerEnabled, true);
   client_->set_is_password_sync_enabled(true);
 
   EXPECT_FALSE(IsGenerationEnabled());
 }
 
 }  // namespace password_manager