Turn on update password UI on iOS by default

ios/chrome/browser/experimental_flags.mm

 // Copyright 2015 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.
 
 // This file can be empty. Its purpose is to contain the relatively short lived
 // definitions required for experimental flags.
 
 #include "ios/chrome/browser/experimental_flags.h"
 
 #include <dispatch/dispatch.h>
 #import <Foundation/Foundation.h>
 
 #include <string>
 
 #include "base/command_line.h"
 #include "base/metrics/field_trial.h"
 #include "base/strings/string_util.h"
 #include "components/autofill/core/common/autofill_switches.h"
 #include "components/variations/variations_associated_data.h"
 #include "ios/chrome/browser/chrome_switches.h"
 #include "ios/web/public/web_view_creation_util.h"
 
 namespace {
 NSString* const kEnableAlertOnBackgroundUpload =
     @"EnableAlertsOnBackgroundUpload";
 NSString* const kEnableViewCopyPasswords = @"EnableViewCopyPasswords";
 NSString* const kHeuristicsForPasswordGeneration =
     @"HeuristicsForPasswordGeneration";
 NSString* const kEnableReadingList = @"EnableReadingList";
-NSString* const kUpdatePasswordUIEnabled = @"UpdatePasswordUIEnabled";
+NSString* const kUpdatePasswordUIDisabled = @"UpdatePasswordUIDisabled";
 NSString* const kEnableQRCodeReader = @"EnableQRCodeReader";
 NSString* const kEnableNewClearBrowsingDataUI = @"EnableNewClearBrowsingDataUI";
 }  // namespace
 
 namespace experimental_flags {
 
 bool IsAlertOnBackgroundUploadEnabled() {
   return [[NSUserDefaults standardUserDefaults]
       boolForKey:kEnableAlertOnBackgroundUpload];
 }
@@ skipping 92 matching lines @@
   }
 
   // Check if the finch experiment is turned on
   std::string group_name =
       base::FieldTrialList::FindFullName("PhysicalWebEnabled");
   return base::StartsWith(group_name, "Enabled",
                           base::CompareCase::INSENSITIVE_ASCII);
 }
 
 bool IsUpdatePasswordUIEnabled() {
-  return [[NSUserDefaults standardUserDefaults]
-      boolForKey:kUpdatePasswordUIEnabled];
+  return ![[NSUserDefaults standardUserDefaults]
+      boolForKey:kUpdatePasswordUIDisabled];
 }
 
 bool IsQRCodeReaderEnabled() {
   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
   if (command_line->HasSwitch(switches::kEnableQRScanner))
     return true;
 
   // Check if the finch experiment is turned on.
   return [[NSUserDefaults standardUserDefaults]
       boolForKey:kEnableQRCodeReader];
 }
 
 bool IsNewClearBrowsingDataUIEnabled() {
   NSString* countersFlag = [[NSUserDefaults standardUserDefaults]
       objectForKey:kEnableNewClearBrowsingDataUI];
   if ([countersFlag isEqualToString:@"Enabled"])
     return true;
   return false;
 }
 
 }  // namespace experimental_flags