FontCachePurgePreventer is needed when computing MinPreferredWidth

third_party/WebKit/Source/core/layout/ng/ng_block_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 NGBlockNode_h
 #define NGBlockNode_h
 
 #include "core/CoreExport.h"
 #include "core/layout/LayoutBox.h"
 #include "core/layout/ng/ng_layout_input_node.h"
@@ skipping 42 matching lines @@
   // Runs layout on layout_box_ and creates a fragment for the resulting
   // geometry.
   RefPtr<NGLayoutResult> RunOldLayout(const NGConstraintSpace&);
 
   // Called if this is an out-of-flow block which needs to be
   // positioned with legacy layout.
   void UseOldOutOfFlowPositioning();
 
   // Save static position for legacy AbsPos layout.
   void SaveStaticOffsetForLegacy(const NGLogicalOffset&);
- private:
 
   bool CanUseNewLayout();
+
+ private:
   bool HasInlineChildren();
 
   // After we run the layout algorithm, this function copies back the geometry
   // data to the layout box.
   void CopyFragmentDataToLayoutBox(const NGConstraintSpace&, NGLayoutResult*);
 
   // We can either wrap a layout_box_ or a next_sibling_/first_child_
   // combination.
   LayoutBox* layout_box_;
   Member<NGLayoutInputNode> next_sibling_;
   Member<NGLayoutInputNode> first_child_;
 };
 
 DEFINE_TYPE_CASTS(NGBlockNode,
                   NGLayoutInputNode,
                   node,
                   node->Type() == NGLayoutInputNode::kLegacyBlock,
                   node.Type() == NGLayoutInputNode::kLegacyBlock);
 
 }  // namespace blink
 
 #endif  // NGBlockNode