[LayoutNG] Remove the ng_layout_coordinator and temporary LayoutSync method.

third_party/WebKit/Source/core/layout/ng/ng_inline_node.cc

Index: third_party/WebKit/Source/core/layout/ng/ng_inline_node.cc
diff --git a/third_party/WebKit/Source/core/layout/ng/ng_inline_node.cc b/third_party/WebKit/Source/core/layout/ng/ng_inline_node.cc
index 5186ccdded05c39d43198eecc8596e5b22910bf3..df065d12aca517d43f671c690ca0d83b52f6a637 100644
--- a/third_party/WebKit/Source/core/layout/ng/ng_inline_node.cc
+++ b/third_party/WebKit/Source/core/layout/ng/ng_inline_node.cc
@@ -215,11 +215,9 @@ void NGInlineNode::ShapeText() {
   }
 }
 
-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,