[LayoutNG] Removes per-child state from NGBlockLayoutAlgorithm.

third_party/WebKit/Source/core/layout/ng/inline/ng_inline_layout_algorithm.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/inline/ng_inline_layout_algorithm.h"
 
 #include "core/layout/ng/inline/ng_bidi_paragraph.h"
 #include "core/layout/ng/inline/ng_inline_break_token.h"
 #include "core/layout/ng/inline/ng_inline_node.h"
 #include "core/layout/ng/inline/ng_line_box_fragment.h"
@@ skipping 37 matching lines @@
           blink::IsHorizontalWritingMode(space->WritingMode())),
       disallow_first_line_rules_(false),
       space_builder_(space)
 {
   container_builder_.MutableUnpositionedFloats() = space->UnpositionedFloats();
 
   // TODO(crbug.com/716930): We may be an empty LayoutInline due to splitting.
   // Only resolve our BFC offset if we know that we are non-empty as we may
   // need to pass through our margin strut.
   if (!inline_node->Items().IsEmpty()) {
-    NGLogicalOffset bfc_offset = ConstraintSpace().BfcOffset();
-    bfc_offset.block_offset += ConstraintSpace().MarginStrut().Sum();
-    MaybeUpdateFragmentBfcOffset(ConstraintSpace(), bfc_offset,
+    LayoutUnit bfc_block_offset = ConstraintSpace().BfcOffset().block_offset;
+    bfc_block_offset += ConstraintSpace().MarginStrut().Sum();
+    MaybeUpdateFragmentBfcOffset(ConstraintSpace(), bfc_block_offset,
                                  &container_builder_);
-    PositionPendingFloats(bfc_offset.block_offset, &container_builder_,
+    PositionPendingFloats(bfc_block_offset, &container_builder_,
                           MutableConstraintSpace());
   }
 
   if (!is_horizontal_writing_mode_)
     baseline_type_ = FontBaseline::kIdeographicBaseline;
 
   border_and_padding_ = ComputeBorders(ConstraintSpace(), Style()) +
                         ComputePadding(ConstraintSpace(), Style());
 
   if (break_token) {
@@ skipping 383 matching lines @@
   // Margin struts shouldn't need to be passed through like this once we've
   // removed LayoutInline splitting.
   if (!container_builder_.BfcOffset()) {
     container_builder_.SetEndMarginStrut(ConstraintSpace().MarginStrut());
   }
 
   return container_builder_.ToBoxFragment();
 }
 
 }  // namespace blink