Revert "Fix border radius on composited children." on 2950 branch

third_party/WebKit/Source/core/layout/LayoutBox.cpp

Index: third_party/WebKit/Source/core/layout/LayoutBox.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutBox.cpp b/third_party/WebKit/Source/core/layout/LayoutBox.cpp
index f061939eeb8075ca052186f34717fbbb9e2ad9c1..ae749332cb175fc9fb0dff0e53e2083c0c4bf687 100644
--- a/third_party/WebKit/Source/core/layout/LayoutBox.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutBox.cpp
@@ -2257,13 +2257,6 @@ bool LayoutBox::paintedOutputOfObjectHasNoEffectRegardlessOfSize() const {
       return false;
   }
 
-  // If the box paints into its own backing, we can assume that it's painting
-  // may have some effect. For example, honoring the border-radius clip on
-  // a composited child paints into a mask for an otherwise non-painting
-  // element, because children of that element will require the mask.
-  if (hasLayer() && layer()->compositingState() == PaintsIntoOwnBacking)
-    return false;
-
   return true;
 }