blink: Cleanup core class forward declarations

third_party/WebKit/Source/core/layout/api/LineLayoutInline.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 LineLayoutInline_h
 #define LineLayoutInline_h
 
 #include "core/layout/LayoutInline.h"
 #include "core/layout/api/LineLayoutBoxModel.h"
 #include "platform/LayoutUnit.h"
 
 namespace blink {
 
-class ComputedStyle;
 class LayoutInline;
-class LayoutObject;
 
 class LineLayoutInline : public LineLayoutBoxModel {
  public:
   explicit LineLayoutInline(LayoutInline* layoutInline)
       : LineLayoutBoxModel(layoutInline) {}
 
   explicit LineLayoutInline(const LineLayoutItem& item)
       : LineLayoutBoxModel(item) {
     SECURITY_DCHECK(!item || item.isLayoutInline());
   }
@@ skipping 61 matching lines @@
   LayoutInline* toInline() { return toLayoutInline(layoutObject()); }
 
   const LayoutInline* toInline() const {
     return toLayoutInline(layoutObject());
   }
 };
 
 }  // namespace blink
 
 #endif  // LineLayoutInline_h