Convert scroll anchoring flag to runtime-enabled feature.

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 "base/auto_reset.h"
@@ skipping 723 matching lines @@
   if (opener_id_ == MSG_ROUTING_NONE)
     did_show_ = true;
   UpdateWebViewWithDeviceScaleFactor();
   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()->settings()->setScrollAnchoringEnabled(
-      command_line.HasSwitch(switches::kEnableScrollAnchoring));
   webview()->setShowFPSCounter(
       command_line.HasSwitch(cc::switches::kShowFPSCounter));
 
   ApplyWebPreferencesInternal(webkit_preferences_, webview(), compositor_deps_);
 
   if (switches::IsTouchDragDropEnabled())
     webview()->settings()->setTouchDragDropEnabled(true);
 
   WebSettings::SelectionStrategyType selection_strategy =
       WebSettings::SelectionStrategyType::Character;
@@ skipping 2766 matching lines @@
   if (IsUseZoomForDSFEnabled()) {
     webview()->setZoomFactorForDeviceScaleFactor(device_scale_factor_);
   } else {
     webview()->setDeviceScaleFactor(device_scale_factor_);
   }
   webview()->settings()->setPreferCompositingToLCDTextEnabled(
       PreferCompositingToLCDText(compositor_deps_, device_scale_factor_));
 }
 
 }  // namespace content