[LayoutNG] Remove the ng_layout_coordinator and temporary LayoutSync method.

third_party/WebKit/Source/core/layout/ng/ng_inline_node.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_inline_node.h"
 
 #include "core/layout/LayoutBlockFlow.h"
 #include "core/layout/LayoutObject.h"
 #include "core/layout/LayoutText.h"
 #include "core/layout/ng/ng_bidi_paragraph.h"
@@ skipping 197 matching lines @@
 
     TextRun item_run(item_text);
     CachingWordShapeIterator iterator(shape_cache, item_run, &item_font);
     RefPtr<const ShapeResult> word_result;
     while (iterator.next(&word_result)) {
       item.shape_results_.push_back(word_result.get());
     };
   }
 }
 
-bool NGInlineNode::Layout(NGConstraintSpace* constraint_space,
-                          NGFragment** out) {
+NGPhysicalFragment* NGInlineNode::Layout(NGConstraintSpace*) {
   ASSERT_NOT_REACHED();
-  *out = nullptr;
-  return true;
+  return nullptr;
 }
 
 bool NGInlineNode::LayoutInline(NGConstraintSpace* constraint_space,
                                 NGLineBuilder* line_builder) {
   PrepareLayout();
 
   // NOTE: We don't need to change the coordinate system here as we are an
   // inline.
   NGConstraintSpace* child_constraint_space =
       NGConstraintSpaceBuilder(constraint_space->WritingMode())
@@ skipping 78 matching lines @@
     Vector<NGLayoutInlineItem>* items,
     unsigned start_index,
     unsigned end_index)
     : start_item_(&(*items)[start_index]),
       size_(end_index - start_index),
       start_index_(start_index) {
   RELEASE_ASSERT(start_index <= end_index && end_index <= items->size());
 }
 
 }  // namespace blink