blink: Cleanup class/struct forward declarations

third_party/WebKit/Source/core/layout/ng/ng_inline_node.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 NGInlineNode_h
 #define NGInlineNode_h
 
 #include "core/CoreExport.h"
 #include "core/layout/ng/ng_layout_input_node.h"
 #include "platform/fonts/FontFallbackPriority.h"
 #include "platform/fonts/shaping/ShapeResult.h"
 #include "platform/heap/Handle.h"
 #include "platform/text/TextDirection.h"
 #include "wtf/text/WTFString.h"
 #include <unicode/ubidi.h>
 #include <unicode/uscript.h>
 
 namespace blink {
 
 class ComputedStyle;
-class LayoutBox;
 class LayoutObject;
 class NGConstraintSpace;
 class NGFragmentBase;
 class NGLayoutAlgorithm;
 class NGLayoutInlineItem;
 class NGLayoutInlineItemsBuilder;
-class NGPhysicalFragment;
-struct MinAndMaxContentSizes;
 
 // Represents an inline node to be laid out.
 class CORE_EXPORT NGInlineNode : public NGLayoutInputNode {
  public:
   NGInlineNode(LayoutObject* start_inline, ComputedStyle* block_style);
   ~NGInlineNode() override;
 
   bool Layout(const NGConstraintSpace*, NGFragmentBase**) override;
   NGInlineNode* NextSibling() override;
 
@@ skipping 82 matching lines @@
 
 DEFINE_TYPE_CASTS(NGInlineNode,
                   NGLayoutInputNode,
                   node,
                   node->Type() == NGLayoutInputNode::kLegacyInline,
                   node.Type() == NGLayoutInputNode::kLegacyInline);
 
 }  // namespace blink
 
 #endif  // NGInlineNode_h