blink: Cleanup class/struct forward declarations

third_party/WebKit/Source/core/layout/ng/ng_text_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_inline_node.h"
 #include "core/layout/ng/ng_layout_algorithm.h"
 #include "wtf/RefPtr.h"
 
 namespace blink {
 
 class ComputedStyle;
 class NGConstraintSpace;
-class NGPhysicalFragment;
 class NGBreakToken;
 
 // A class for text layout. This takes a NGInlineNode which consists only
 // non-atomic inlines and produces NGTextFragments.
 //
 // Unlike other layout algorithms this takes a NGInlineNode as its input instead
 // of the ComputedStyle as it operates over multiple inlines with different
 // style.
 class CORE_EXPORT NGTextLayoutAlgorithm : public NGLayoutAlgorithm {
  public:
@@ skipping 13 matching lines @@
 
  private:
   Member<NGInlineNode> inline_box_;
   Member<NGConstraintSpace> constraint_space_;
   Member<NGBreakToken> break_token_;
 };
 
 }  // namespace blink
 
 #endif  // NGInlineLayoutAlgorithm_h