Added experiment for changing viewport scroll ordering.

content/public/common/web_preferences.cc

 // 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.
 
 #include "content/public/common/web_preferences.h"
 
 #include "base/basictypes.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "third_party/WebKit/public/web/WebSettings.h"
@@ skipping 166 matching lines @@
       viewport_enabled(false),
       viewport_meta_enabled(false),
       main_frame_resizes_are_orientation_changes(false),
       initialize_at_minimum_page_scale(true),
 #if defined(OS_MACOSX)
       smart_insert_delete_enabled(true),
 #else
       smart_insert_delete_enabled(false),
 #endif
       spatial_navigation_enabled(false),
+      invert_viewport_scroll_order(false),
       pinch_overlay_scrollbar_thickness(0),
       use_solid_color_scrollbars(false),
       navigate_on_drag_drop(true),
       v8_cache_options(V8_CACHE_OPTIONS_DEFAULT),
       slimming_paint_enabled(false),
       cookie_enabled(true),
       pepper_accelerated_video_decode_enabled(false),
       animation_policy(IMAGE_ANIMATION_POLICY_ALLOWED),
 #if defined(OS_ANDROID)
       text_autosizing_enabled(true),
@@ skipping 35 matching lines @@
   cursive_font_family_map[kCommonScript] = base::ASCIIToUTF16("Script");
   fantasy_font_family_map[kCommonScript] = base::ASCIIToUTF16("Impact");
   pictograph_font_family_map[kCommonScript] =
       base::ASCIIToUTF16("Times New Roman");
 }
 
 WebPreferences::~WebPreferences() {
 }
 
 }  // namespace content