CS of out-of-flow positioned objects should have is_new_fc == true

third_party/WebKit/Source/core/layout/ng/ng_space_utils.h

 // Copyright 2017 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.
 
 #ifndef NGSpaceUtils_h
 #define NGSpaceUtils_h
 
 #include "core/layout/ng/ng_constraint_space.h"
 #include "core/style/ComputedStyle.h"
 #include "wtf/Optional.h"
 
 namespace blink {
 
 // Whether an in-flow block-level child creates a new formatting context.
 //
 // This will *NOT* check the following cases:
-//  - The child is out-of-flow, e.g. floating or abs-pos.
 //  - The child is a inline-level, e.g. "display: inline-block".
 //  - The child establishes a new formatting context, but should be a child of
 //    another layout algorithm, e.g. "display: table-caption" or flex-item.
 CORE_EXPORT bool IsNewFormattingContextForInFlowBlockLevelChild(

[ikilpatrick, 2017/03/23 16:39:59]

rename now to:

IsNewFormattingContextForBlockLevelChild

[Gleb Lanbin, 2017/03/24 20:10:05]

Done.

     const NGConstraintSpace& space,
     const ComputedStyle& style);
 
 // Gets the clearance offset based on the provided {@code style} and list of
 // exclusions that represent left/right float.
 CORE_EXPORT WTF::Optional<LayoutUnit> GetClearanceOffset(
     const std::shared_ptr<NGExclusions>& exclusions,
     const ComputedStyle& style);
 
 }  // namespace blink
 
 #endif  // NGSpaceUtils_h