Make it possible for downstream projects to easily set the default fill color

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 1033 matching lines @@
   settings->setShouldRespectImageOrientation(
       prefs.should_respect_image_orientation);
 
   settings->setEditingBehavior(
       static_cast<WebSettings::EditingBehavior>(prefs.editing_behavior));
 
   settings->setSupportsMultipleWindows(prefs.supports_multiple_windows);
 
   settings->setInertVisualViewport(prefs.inert_visual_viewport);
 
+  settings->setDefaultBackgroundColor(prefs.default_background_color);
+
   settings->setMainFrameClipsContent(!prefs.record_whole_document);
 
   settings->setSmartInsertDeleteEnabled(prefs.smart_insert_delete_enabled);
 
   settings->setSpatialNavigationEnabled(prefs.spatial_navigation_enabled);
 
   settings->setSelectionIncludesAltImageText(true);
 
   settings->setV8CacheOptions(
       static_cast<WebSettings::V8CacheOptions>(prefs.v8_cache_options));
@@ skipping 2037 matching lines @@
         return render_frame->focused_pepper_plugin();
     }
     frame = frame->traverseNext(false);
   }
 
   return nullptr;
 }
 #endif
 
 }  // namespace content