Remove --enable-region-based-columns command line flag.

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 995 matching lines @@
   settings->setDisableReadingFromCanvas(prefs.disable_reading_from_canvas);
   settings->setStrictMixedContentChecking(prefs.strict_mixed_content_checking);
   settings->setStrictPowerfulFeatureRestrictions(
       prefs.strict_powerful_feature_restrictions);
   settings->setPasswordEchoEnabled(prefs.password_echo_enabled);
   settings->setShouldPrintBackgrounds(prefs.should_print_backgrounds);
   settings->setShouldClearDocumentBackground(
       prefs.should_clear_document_background);
   settings->setEnableScrollAnimator(prefs.enable_scroll_animator);
 
-  settings->setRegionBasedColumnsEnabled(prefs.region_based_columns_enabled);
-
   WebRuntimeFeatures::enableTouch(prefs.touch_enabled);
   settings->setMaxTouchPoints(prefs.pointer_events_max_touch_points);
   settings->setAvailablePointerTypes(prefs.available_pointer_types);
   settings->setPrimaryPointerType(
       static_cast<WebSettings::PointerType>(prefs.primary_pointer_type));
   settings->setAvailableHoverTypes(prefs.available_hover_types);
   settings->setPrimaryHoverType(
       static_cast<WebSettings::HoverType>(prefs.primary_hover_type));
   settings->setDeviceSupportsTouch(prefs.device_supports_touch);
   settings->setDeviceSupportsMouse(prefs.device_supports_mouse);
@@ skipping 2733 matching lines @@
     std::vector<gfx::Size> sizes;
     ConvertToFaviconSizes(icon_urls[i].sizes(), &sizes);
     if (!url.isEmpty())
       urls.push_back(
           FaviconURL(url, ToFaviconType(icon_urls[i].iconType()), sizes));
   }
   SendUpdateFaviconURL(urls);
 }
 
 }  // namespace content