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

components/autofill/content/common/autofill_driver.mojom

 // Copyright 2016 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.
 
 module autofill.mojom;
 
 import "components/autofill/content/common/autofill_types.mojom";
 import "mojo/common/string16.mojom";
 import "mojo/common/text_direction.mojom";
 import "mojo/common/time.mojom";
@@ skipping 59 matching lines @@
   PasswordFormsParsed(array<PasswordForm> forms);
 
   // Notification that initial layout has occurred and the following password
   // forms are visible on the page (e.g. not set to display:none.), and whether
   // all frames in the page have been rendered.
   PasswordFormsRendered(array<PasswordForm> visible_forms,
                         bool did_stop_loading);
 
   // Notification that this password form was submitted by the user.
   PasswordFormSubmitted(PasswordForm password_form);
+  
+  // Notification that the omnibox icon with anchored save/update prompt should
+  // be available.

[vasilii, 2017/07/21 12:48:20]

Can we get a bit lower level here. Describe what triggers it. Same below.

[kolos1, 2017/07/24 15:33:30]

Done.

+  ShowManualFallback(PasswordForm password_form);

[vasilii, 2017/07/21 12:48:20]

Emphasize that it's for saving. Same below.

[kolos1, 2017/07/24 15:33:30]

Done.

+  
+  // Notification that the save/update prompt anchored to the omnibox icon
+  // should be removed. 
+  HideManualFallback();
 
   // Notification that in-page navigation happened and at this moment we have
   // filled password form. We use this as a signal for successful login.
   InPageNavigation(PasswordForm password_form);
 
   // Sends |log| to browser for displaying to the user. Only strings passed as
   // an argument to methods overriding SavePasswordProgressLogger::SendLog may
   // become |log|, because those are guaranteed to be sanitized.
   // Never pass a free-form string as |log|.
   RecordSavePasswordProgress(string log);
@@ skipping 56 matching lines @@
       PasswordForm password_form);
 
   // Instructs the browser to show the popup for editing a generated password.
   // The location should be specified in the renderers coordinate system. Form
   // is the form associated with the password field.
   ShowPasswordEditingPopup(gfx.mojom.RectF bounds, PasswordForm password_form);
 
   // Instructs the browser to hide any password generation popups.
   HidePasswordGenerationPopup();
 };