[LayoutNG] Don't pass parent NGFragmentBuilder into NGLineBuilder.

third_party/WebKit/Source/core/layout/ng/ng_block_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/ng_block_layout_algorithm.h"
 
 #include "core/layout/ng/ng_absolute_utils.h"
 #include "core/layout/ng/ng_block_break_token.h"
 #include "core/layout/ng/ng_block_child_iterator.h"
 #include "core/layout/ng/ng_box_fragment.h"
@@ skipping 440 matching lines @@
                                             GetChildSpaceOffset());
         NGBlockChildIterator::Entry entry = child_iterator.NextChild();
         child = entry.node;
         child_break_token = entry.token;
         continue;
       }
     }
 
     RefPtr<NGConstraintSpace> child_space =
         CreateConstraintSpaceForChild(child);
+    RefPtr<NGLayoutResult> layout_result =
+        child->Layout(child_space.get(), child_break_token);
 
-    RefPtr<NGLayoutResult> layout_result;
-    if (child->Type() == NGLayoutInputNode::kLegacyInline) {
-      layout_result = toNGInlineNode(child)->Layout(
-          child_space.get(), &builder_, child_break_token);
-    } else {
-      layout_result = child->Layout(child_space.get(), child_break_token);
-    }
     FinishChildLayout(child, child_space.get(), layout_result);
 
     entry = child_iterator.NextChild();
     child = entry.node;
     child_break_token = entry.token;
 
     if (IsOutOfSpace(ConstraintSpace(), content_size_))
       break;
   }
 
@@ skipping 267 matching lines @@
       DCHECK(builder_.BfcOffset());
       space_available -= curr_bfc_offset_.block_offset;
     }
   }
   space_builder_.SetFragmentainerSpaceAvailable(space_available);
 
   return space_builder_.ToConstraintSpace(
       FromPlatformWritingMode(child_style.getWritingMode()));
 }
 }  // namespace blink