blink: Cleanup core class forward declarations

third_party/WebKit/Source/core/layout/api/LineLayoutBlockFlow.h

 // Copyright 2015 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 LineLayoutBlockFlow_h
 #define LineLayoutBlockFlow_h
 
 #include "core/layout/FloatingObjects.h"
 #include "core/layout/LayoutBlockFlow.h"
 #include "core/layout/api/LineLayoutBox.h"
 #include "platform/LayoutUnit.h"
 
 namespace blink {
 
 class LayoutBlockFlow;
 class FloatingObject;
-class LineInfo;
 class LineWidth;
 
 class LineLayoutBlockFlow : public LineLayoutBox {
  public:
   explicit LineLayoutBlockFlow(LayoutBlockFlow* blockFlow)
       : LineLayoutBox(blockFlow) {}
 
   explicit LineLayoutBlockFlow(const LineLayoutItem& item)
       : LineLayoutBox(item) {
     SECURITY_DCHECK(!item || item.isLayoutBlockFlow());
@@ skipping 171 matching lines @@
  private:
   LayoutBlockFlow* toBlockFlow() { return toLayoutBlockFlow(layoutObject()); };
   const LayoutBlockFlow* toBlockFlow() const {
     return toLayoutBlockFlow(layoutObject());
   };
 };
 
 }  // namespace blink
 
 #endif  // LineLayoutBlockFlow_h