Add tests and settings plumbing for accelerated fixed root background

Source/WebKit/chromium/src/WebSettingsImpl.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 435 matching lines @@
 void WebSettingsImpl::setAcceleratedCompositingForFiltersEnabled(bool enabled)
 {
     m_settings->setAcceleratedCompositingForFiltersEnabled(enabled);
 }
 
 void WebSettingsImpl::setAcceleratedCompositingForVideoEnabled(bool enabled)
 {
     m_settings->setAcceleratedCompositingForVideoEnabled(enabled);
 }
 
-void WebSettingsImpl::setAcceleratedCompositingForOverflowScrollEnabled(
-    bool enabled)
+void WebSettingsImpl::setAcceleratedCompositingForOverflowScrollEnabled(bool enabled)
 {
     m_settings->setAcceleratedCompositingForOverflowScrollEnabled(enabled);
 }
 
+void WebSettingsImpl::setAcceleratedCompositingForFixedRootBackgroundEnabled(bool enabled)
+{
+    m_settings->setAcceleratedCompositingForFixedRootBackgroundEnabled(enabled);
+}
+
 void WebSettingsImpl::setAcceleratedCompositingForPluginsEnabled(bool enabled)
 {
     m_settings->setAcceleratedCompositingForPluginsEnabled(enabled);
 }
 
 void WebSettingsImpl::setAcceleratedCompositingForCanvasEnabled(bool enabled)
 {
     m_settings->setAcceleratedCompositingForCanvasEnabled(enabled);
 }
 
@@ skipping 221 matching lines @@
 {
     m_pinchOverlayScrollbarThickness = thickness;
 }
 
 void WebSettingsImpl::setPinchVirtualViewportEnabled(bool enabled)
 {
     m_settings->setPinchVirtualViewportEnabled(enabled);
 }
 
 } // namespace WebKit