Convert Settings::rootLayerScrolls to RuntimeEnabledFeatures

content/renderer/render_view_impl.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 "content/renderer/render_view_impl.h"
 
 #include <algorithm>
 #include <cmath>
 #include <memory>
 
@@ skipping 728 matching lines @@
   base::debug::SetCrashKeyValue("rvinit_proxy_id",
                                 base::IntToString(params.proxy_routing_id));
   base::debug::SetCrashKeyValue(
       "rvinit_main_frame_id", base::IntToString(params.main_frame_routing_id));
 
   webview()->setDisplayMode(display_mode_);
   webview()->settings()->setPreferCompositingToLCDTextEnabled(
       PreferCompositingToLCDText(compositor_deps_, device_scale_factor_));
   webview()->settings()->setThreadedScrollingEnabled(
       !command_line.HasSwitch(switches::kDisableThreadedScrolling));
-  webview()->settings()->setRootLayerScrolls(
-      command_line.HasSwitch(switches::kRootLayerScrolls));
   webview()->setShowFPSCounter(
       command_line.HasSwitch(cc::switches::kShowFPSCounter));
   webview()->setDeviceColorProfile(params.image_decode_color_space.GetData());
 
   ApplyWebPreferencesInternal(webkit_preferences_, webview(), compositor_deps_);
 
   if (switches::IsTouchDragDropEnabled())
     webview()->settings()->setTouchDragDropEnabled(true);
 
   webview()->settings()->setBrowserSideNavigationEnabled(
@@ skipping 2321 matching lines @@
         return render_frame->focused_pepper_plugin();
     }
     frame = frame->traverseNext(false);
   }
 
   return nullptr;
 }
 #endif
 
 }  // namespace content