[Password Manager] Show omnibox icon and anchored prompt once user start typing password

components/password_manager/core/browser/password_manager_client.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_CLIENT_H_
 #define COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_PASSWORD_MANAGER_CLIENT_H_
 
 #include <vector>
 
 #include "base/callback.h"
@@ skipping 76 matching lines @@
   // 2.A change password form was submitted and the user has more than one
   // stored credential. Then we shouldn't expect anything from
   // form_to_save.pending_credentials() except correct origin, since we don't
   // know which credentials should be updated.
   // 3.A sign-in password form was submitted with a password different from
   // the stored one. In this case form_to_save.password_overridden() == true
   // and form_to_save.pending_credentials() should correspond to the credential
   // that was overidden.
   virtual bool PromptUserToSaveOrUpdatePassword(
       std::unique_ptr<PasswordFormManager> form_to_save,
-      bool update_password) = 0;
+      bool is_update) = 0;
+
+  // Informs the embedder that the user started typing a password and a password
+  // prompt should be available on click on the omnibox icon.
+  virtual void ShowManualFallbackForSaving(
+      std::unique_ptr<PasswordFormManager> form_to_save,
+      bool has_generated_password,
+      bool is_update) = 0;
+
+  // Informs the embedder that the user cleared the password field and the
+  // fallback for password saving should be not available.
+  virtual void HideManualFallbackForSaving() = 0;
 
   // Informs the embedder of a password forms that the user should choose from.
   // Returns true if the prompt is indeed displayed. If the prompt is not
   // displayed, returns false and does not call |callback|.
   // |callback| should be invoked with the chosen form.
   virtual bool PromptUserToChooseCredentials(
       std::vector<std::unique_ptr<autofill::PasswordForm>> local_forms,
       const GURL& origin,
       const CredentialsCallback& callback) = 0;
 
@@ skipping 126 matching lines @@
   // hold on to the pointer.
   virtual PasswordManagerMetricsRecorder& GetMetricsRecorder() = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(PasswordManagerClient);
 };
 
 }  // namespace password_manager
 
 #endif  // COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_PASSWORD_MANAGER_CLIENT_H_