Add StyleChangeState to get rid of a bunch of static state in the render tree.

Source/WebCore/rendering/RenderRegion.cpp

 /*
  * Copyright (C) 2011 Adobe Systems Incorporated. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above
  *    copyright notice, this list of conditions and the following
  *    disclaimer.
@@ skipping 231 matching lines @@
     }
 }
 
 bool RenderRegion::shouldHaveAutoLogicalHeight() const
 {
     bool hasSpecifiedEndpointsForHeight = style()->logicalTop().isSpecified() && style()->logicalBottom().isSpecified();
     bool hasAnchoredEndpointsForHeight = isOutOfFlowPositioned() && hasSpecifiedEndpointsForHeight;
     return style()->logicalHeight().isAuto() && !hasAnchoredEndpointsForHeight;
 }
     
-void RenderRegion::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
+void RenderRegion::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle, const StyleChangeState& state)
 {
-    RenderBlock::styleDidChange(diff, oldStyle);
+    RenderBlock::styleDidChange(diff, oldStyle, state);
 
     // If the region is not attached to any thread, there is no need to check
     // whether the region has region styling since no content will be displayed
     // into the region.
     if (!m_flowThread) {
         setHasCustomRegionStyle(false);
         return;
     }
 
     checkRegionStyle();
@@ skipping 383 matching lines @@
     if (!hasOverrideHeight())
         return;
 
     LayoutUnit newLogicalHeight = overrideLogicalContentHeight() + borderAndPaddingLogicalHeight();
     ASSERT(newLogicalHeight < LayoutUnit::max() / 2);
     if (newLogicalHeight > logicalHeight())
         setLogicalHeight(newLogicalHeight);
 }
 
 } // namespace WebCore