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

chrome/browser/about_flags.cc

 // Copyright (c) 2012 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 "chrome/browser/about_flags.h"
 
 #include <iterator>
 #include <map>
 #include <set>
 #include <utility>
@@ skipping 1527 matching lines @@
     {"enable-username-correction",
      flag_descriptions::kEnableUsernameCorrectionName,
      flag_descriptions::kEnableUsernameCorrectionDescription,
      kOsWin | kOsLinux | kOsCrOS,
      FEATURE_VALUE_TYPE(password_manager::features::kEnableUsernameCorrection)},
     {"enable-password-force-saving",
      flag_descriptions::kPasswordForceSavingName,
      flag_descriptions::kPasswordForceSavingDescription, kOsAll,
      FEATURE_VALUE_TYPE(
          password_manager::features::kEnablePasswordForceSaving)},
+    {"enable-manual-fallback-for-password-saving",
+     flag_descriptions::kManualFallbackForPasswordSavingName,
+     flag_descriptions::kManualFallbackForPasswordSavingDescription, kOsDesktop,
+     FEATURE_VALUE_TYPE(
+         password_manager::features::kEnableManualFallbackForSaving)},
     {"enable-manual-password-generation",
      flag_descriptions::kManualPasswordGenerationName,
      flag_descriptions::kManualPasswordGenerationDescription, kOsAll,
      FEATURE_VALUE_TYPE(
          password_manager::features::kEnableManualPasswordGeneration)},
     {"enable-show-autofill-signatures",
      flag_descriptions::kShowAutofillSignaturesName,
      flag_descriptions::kShowAutofillSignaturesDescription, kOsAll,
      SINGLE_VALUE_TYPE(autofill::switches::kShowAutofillSignatures)},
     {"affiliation-based-matching",
@@ skipping 1886 matching lines @@
 const base::HistogramBase::Sample kBadSwitchFormatHistogramId = 0;
 
 const FeatureEntry* GetFeatureEntries(size_t* count) {
   *count = arraysize(kFeatureEntries);
   return kFeatureEntries;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags