Bug 579663. Part 7. Assert AppUnitsPerDevPixel is constant in container layers. r=roc

2010-08-08 13:49:07 -05:00
parent 82df5608ba
commit d459768e27
1 changed files with 3 additions and 0 deletions
--- a/layout/base/FrameLayerBuilder.cpp
+++ b/layout/base/FrameLayerBuilder.cpp
@@ -1053,6 +1053,9 @@ ContainerState::InvalidateForLayerChange(nsDisplayItem* aItem, Layer* aNewLayer)
      }
    }

+    NS_ASSERTION(appUnitsPerDevPixel ==
+                   mContainerFrame->PresContext()->AppUnitsPerDevPixel(),
+                 "app units per dev pixel should be constant in a container");
    mContainerFrame->InvalidateWithFlags(
        bounds - mBuilder->ToReferenceFrame(mContainerFrame),
        nsIFrame::INVALIDATE_NO_THEBES_LAYERS |