Remove Blink's ConvertableToTraceFormat

third_party/WebKit/Source/core/layout/TracedLayoutObject.cpp

 // 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.
 
 #include "core/layout/TracedLayoutObject.h"
 
 #include "core/layout/LayoutInline.h"
 #include "core/layout/LayoutTableCell.h"
 #include "core/layout/LayoutText.h"
 #include "core/layout/LayoutView.h"
@@ skipping 81 matching lines @@
             tracedValue->beginDictionary();
             dumpToTracedValue(*child, traceGeometry, tracedValue);
             tracedValue->endDictionary();
         }
         tracedValue->endArray();
     }
 }
 
 } // namespace
 
-PassRefPtr<TraceEvent::ConvertableToTraceFormat> TracedLayoutObject::create(const LayoutView& view, bool traceGeometry)
+PassRefPtr<TracedValue> TracedLayoutObject::create(const LayoutView& view, bool traceGeometry)
 {
     RefPtr<TracedValue> tracedValue = TracedValue::create();
     dumpToTracedValue(view, traceGeometry, tracedValue.get());
     return tracedValue.release();
 }
 
 } // namespace blink