Turn FrameView's paintBehavior into a real global

Source/core/paint/DeprecatedPaintLayer.cpp

Index: Source/core/paint/DeprecatedPaintLayer.cpp
diff --git a/Source/core/paint/DeprecatedPaintLayer.cpp b/Source/core/paint/DeprecatedPaintLayer.cpp
index 8167ca351f47d5c7b89ad8c07e566e66749ae215..836f98a3ad477cf9e443d33ba6724ed3af9c0336 100644
--- a/Source/core/paint/DeprecatedPaintLayer.cpp
+++ b/Source/core/paint/DeprecatedPaintLayer.cpp
@@ -410,7 +410,7 @@ TransformationMatrix DeprecatedPaintLayer::renderableTransform(PaintBehavior pai
     if (!m_transform)
         return TransformationMatrix();
 
-    if (paintBehavior & PaintBehaviorFlattenCompositingLayers) {
+    if (gGlobalPaintFlags & GlobalPaintFlattenCompositingLayers) {
         TransformationMatrix matrix = *m_transform;
         makeMatrixRenderable(matrix, false /* flatten 3d */);
         return matrix;
@@ -2378,7 +2378,7 @@ bool DeprecatedPaintLayer::hasCompositedClippingMask() const
 
 bool DeprecatedPaintLayer::paintsWithTransform(PaintBehavior paintBehavior) const
 {
-    return (transform() || layoutObject()->style()->position() == FixedPosition) && ((paintBehavior & PaintBehaviorFlattenCompositingLayers) || compositingState() != PaintsIntoOwnBacking);
+    return (transform() || layoutObject()->style()->position() == FixedPosition) && ((gGlobalPaintFlags & GlobalPaintFlattenCompositingLayers) || compositingState() != PaintsIntoOwnBacking);
 }
 
 bool DeprecatedPaintLayer::backgroundIsKnownToBeOpaqueInRect(const LayoutRect& localRect) const