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

content/public/common/web_preferences.h

 // Copyright 2014 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.
 
 #ifndef CONTENT_PUBLIC_COMMON_WEB_PREFERENCES_H_
 #define CONTENT_PUBLIC_COMMON_WEB_PREFERENCES_H_
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/strings/string16.h"
 #include "build/build_config.h"
 #include "content/common/content_export.h"
 #include "ui/base/touch/touch_device.h"
 #include "url/gurl.h"
 
 namespace blink {
 class WebView;
+typedef unsigned WebColor;
 }
 
 namespace content {
 
 // Map of ISO 15924 four-letter script code to font family.  For example,
 // "Arab" to "My Arabic Font".
 typedef std::map<std::string, base::string16> ScriptFontFamilyMap;
 
 enum EditingBehavior {
   EDITING_BEHAVIOR_MAC,
@@ skipping 140 matching lines @@
   int available_pointer_types;
   ui::PointerType primary_pointer_type;
   int available_hover_types;
   ui::HoverType primary_hover_type;
   bool sync_xhr_in_documents_enabled;
   bool image_color_profiles_enabled;
   bool should_respect_image_orientation;
   int number_of_cpu_cores;
   EditingBehavior editing_behavior;
   bool supports_multiple_windows;
+
+  // The color to paint before initial style is applied. This is modified by
+  // downstream products (eg Opera TV) to avoid white screen flashes when
+  // opening new tabs.
+  blink::WebColor default_background_color;
+
   bool viewport_enabled;
   bool viewport_meta_enabled;
   bool shrinks_viewport_contents_to_fit;
   ViewportStyle viewport_style;
   bool always_show_context_menu_on_touch;
   bool main_frame_resizes_are_orientation_changes;
   bool initialize_at_minimum_page_scale;
   bool smart_insert_delete_enabled;
   bool spatial_navigation_enabled;
   int pinch_overlay_scrollbar_thickness;
@@ skipping 65 matching lines @@
   // chrome, except for the cases where it would require lots of extra work for
   // the embedder to use the same default value.
   WebPreferences();
   WebPreferences(const WebPreferences& other);
   ~WebPreferences();
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_COMMON_WEB_PREFERENCES_H_