Increase width of viewportConstrainedNotCompositingReasons

Source/core/rendering/RenderLayer.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  *
  * Portions are Copyright (C) 1998 Netscape Communications Corporation.
  *
  * Other contributors:
  *   Robert O'Callahan <roc+@cs.cmu.edu>
  *   David Baron <dbaron@fas.harvard.edu>
  *   Christian Biesinger <cbiesinger@web.de>
  *   Randall Jesup <rjesup@wgate.com>
@@ skipping 3993 matching lines @@
         } else {
             rect.append(localBoundingBox());
             rects.set(this, rect);
         }
     }
 }
 
 DisableCompositingQueryAsserts::DisableCompositingQueryAsserts()
     : m_disabler(gCompositingQueryMode, CompositingQueriesAreAllowed) { }
 
+COMPILE_ASSERT(1 << 3 >= RenderLayer::NumNotCompositedReasons, too_many_viewport_constrained_not_compositing_reasons);

[enne (OOO), 2014/02/28 22:09:48]

The duplicate 3 is here is unfortunate.  Somebody could update one but not the
other.  Can you use sizeof? Or something else?

+
 } // namespace WebCore
 
 #ifndef NDEBUG
 void showLayerTree(const WebCore::RenderLayer* layer)
 {
     if (!layer)
         return;
 
     if (WebCore::LocalFrame* frame = layer->renderer()->frame()) {
         WTF::String output = externalRepresentation(frame, WebCore::RenderAsTextShowAllLayers | WebCore::RenderAsTextShowLayerNesting | WebCore::RenderAsTextShowCompositedLayers | WebCore::RenderAsTextShowAddresses | WebCore::RenderAsTextShowIDAndClass | WebCore::RenderAsTextDontUpdateLayout | WebCore::RenderAsTextShowLayoutState);
         fprintf(stderr, "%s\n", output.utf8().data());
     }
 }
 
 void showLayerTree(const WebCore::RenderObject* renderer)
 {
     if (!renderer)
         return;
     showLayerTree(renderer->enclosingLayer());
 }
 #endif