[LayoutNG] Remove the state machine from ng_out_of_flow_layout_part.

third_party/WebKit/Source/core/layout/ng/ng_absolute_utils.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/layout/ng/ng_absolute_utils.h"
 
 #include "core/layout/ng/ng_constraint_space.h"
 #include "core/layout/ng/ng_length_utils.h"
 #include "core/style/ComputedStyle.h"
 #include "platform/LengthFunctions.h"
@@ skipping 317 matching lines @@
     return AbsoluteHorizontalNeedsEstimate(style);
 }
 
 bool AbsoluteNeedsChildInlineSize(const ComputedStyle& style) {
   if (style.isHorizontalWritingMode())
     return AbsoluteHorizontalNeedsEstimate(style);
   else
     return AbsoluteVerticalNeedsEstimate(style);
 }
 
+bool IsContainerForAbsoluteChild(const ComputedStyle& container_style,
+                                 const ComputedStyle& child_style) {
+  EPosition position = child_style.position();
+  bool contains_fixed = container_style.canContainFixedPositionObjects();
+  bool contains_absolute =
+      container_style.canContainAbsolutePositionObjects() || contains_fixed;
+
+  return (contains_absolute && position == AbsolutePosition) ||
+         (contains_fixed && position == FixedPosition);
+}
+
 NGAbsolutePhysicalPosition ComputePartialAbsoluteWithChildInlineSize(
     const NGConstraintSpace& space,
     const ComputedStyle& style,
     const NGStaticPosition& static_position,
     const Optional<MinAndMaxContentSizes>& child_minmax) {
   NGAbsolutePhysicalPosition position;
   if (style.isHorizontalWritingMode())
     ComputeAbsoluteHorizontal(space, style, static_position, child_minmax,
                               &position);
   else {
@@ skipping 20 matching lines @@
   if (style.isHorizontalWritingMode())
     ComputeAbsoluteVertical(space, style, static_position, child_minmax,
                             position);
   else {
     ComputeAbsoluteHorizontal(space, style, static_position, child_minmax,
                               position);
   }
 }
 
 }  // namespace blink