[LayoutNG] Remove the ng_layout_coordinator and temporary LayoutSync method.

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

 // 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.
 
 #ifndef NGInlineLayoutAlgorithm_h
 #define NGInlineLayoutAlgorithm_h
 
 #include "core/CoreExport.h"
 #include "core/layout/ng/ng_layout_algorithm.h"
 #include "wtf/RefPtr.h"
@@ skipping 19 matching lines @@
   // @param style Style reference of the block that is being laid out.
   // @param first_child Our first child; the algorithm will use its NextSibling
   //                    method to access all the children.
   // @param space The constraint space which the algorithm should generate a
   //              fragment within.
   NGInlineLayoutAlgorithm(PassRefPtr<const ComputedStyle>,
                           NGInlineNode* first_child,
                           NGConstraintSpace* space,
                           NGBreakToken* break_token = nullptr);
 
-  NGLayoutStatus Layout(NGPhysicalFragment*,
-                        NGPhysicalFragment**,
-                        NGLayoutAlgorithm**) override;
+  NGPhysicalFragment* Layout() override;
 
   DECLARE_VIRTUAL_TRACE();
 
  private:
   // Read-only Getters.
   const ComputedStyle& Style() const { return *style_; }
 
   bool LayoutCurrentChild();
   NGConstraintSpace* CreateConstraintSpaceForCurrentChild() const;
 
-  enum State { kStateInit, kStateChildLayout, kStateFinalize };
-  State state_ = kStateInit;
-
   RefPtr<const ComputedStyle> style_;
   Member<NGInlineNode> first_child_;
   Member<NGConstraintSpace> constraint_space_;
   Member<NGBreakToken> break_token_;
   Member<NGFragmentBuilder> builder_;
   Member<NGConstraintSpace> space_for_current_child_;
   Member<NGInlineNode> current_child_;
   Member<NGLineBuilder> line_builder_;
 };
 
 }  // namespace blink
 
 #endif  // NGInlineLayoutAlgorithm_h