[MD Bookmarks] Enable 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 162 matching lines @@
 const base::Feature kLsdPermissionPrompt{"LsdPermissionPrompt",
                                          base::FEATURE_DISABLED_BY_DEFAULT};
 
 #if defined(OS_MACOSX)
 // Enables RTL layout in macOS top chrome.
 const base::Feature kMacRTL{"MacRTL", base::FEATURE_DISABLED_BY_DEFAULT};
 #endif
 
 // Enables or disables the Material Design version of chrome://bookmarks.
 const base::Feature kMaterialDesignBookmarks{"MaterialDesignBookmarks",
-                                             base::FEATURE_DISABLED_BY_DEFAULT};
+                                             base::FEATURE_ENABLED_BY_DEFAULT};
 
 #if BUILDFLAG(ENABLE_EXTENSIONS)
 // Enabled or disabled the Material Design version of chrome://extensions.
 const base::Feature kMaterialDesignExtensions{
     "MaterialDesignExtensions", base::FEATURE_DISABLED_BY_DEFAULT};
 
 // Sets whether dismissing the new-tab-page override bubble counts as
 // acknowledgement.
 extern const base::Feature kAcknowledgeNtpOverrideOnDeactivate{
     "AcknowledgeNtpOverrideOnDeactivate", base::FEATURE_DISABLED_BY_DEFAULT};
@@ skipping 192 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