Enable AutoDismissingDialogs by default.

chrome/common/chrome_features.cc

 // 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.
 
 #include "chrome/common/chrome_features.h"
 
 #include "base/command_line.h"
 #include "chrome/common/chrome_switches.h"
 #include "extensions/features/features.h"
 #include "ppapi/features/features.h"
@@ skipping 25 matching lines @@
 #endif  // defined(OS_CHROMEOS)
 
 // If enabled, the list of content suggestions on the New Tab page will contain
 // assets (e.g. books, pictures, audio) that the user downloaded for later use.
 const base::Feature kAssetDownloadSuggestionsFeature{
     "NTPAssetDownloadSuggestions", base::FEATURE_ENABLED_BY_DEFAULT};
 
 #if !defined(OS_ANDROID) && !defined(OS_IOS)
 // Enables auto-dismissing JavaScript dialogs.
 const base::Feature kAutoDismissingDialogs{"AutoDismissingDialogs",
-                                           base::FEATURE_DISABLED_BY_DEFAULT};
+                                           base::FEATURE_ENABLED_BY_DEFAULT};
 #endif
 
 #if defined(OS_WIN) || defined(OS_MACOSX)
 // Enables automatic tab discarding, when the system is in low memory state.
 const base::Feature kAutomaticTabDiscarding{"AutomaticTabDiscarding",
                                             base::FEATURE_ENABLED_BY_DEFAULT};
 #endif  // defined(OS_WIN) || defined(OS_MACOSX)
 
 #if defined(OS_WIN) || defined(OS_LINUX)
 // Enables the Restart background mode optimization. When all Chrome UI is
@@ skipping 289 matching lines @@
   return base::FeatureList::IsEnabled(features::kPrefService) ||
 #if BUILDFLAG(ENABLE_PACKAGE_MASH_SERVICES)
          base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
              switches::kMusConfig) == switches::kMash;
 #else
          false;
 #endif
 }
 
 }  // namespace features