Remove TRACE_EVENT indirection through blink::Platform

sky/engine/platform/exported/WebConvertableToTraceFormat.cpp

-// Copyright 2014 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 "sky/engine/config.h"
-#include "sky/engine/public/platform/WebConvertableToTraceFormat.h"
-
-#include "sky/engine/platform/EventTracer.h"
-#include "sky/engine/public/platform/WebString.h"
-
-namespace blink {
-
-WebConvertableToTraceFormat::WebConvertableToTraceFormat(TraceEvent::ConvertableToTraceFormat* convertable)
-    : m_private(convertable)
-{
-}
-
-WebString WebConvertableToTraceFormat::asTraceFormat() const
-{
-    return m_private->asTraceFormat();
-}
-
-void WebConvertableToTraceFormat::assign(const WebConvertableToTraceFormat& r)
-{
-    m_private = r.m_private;
-}
-
-void WebConvertableToTraceFormat::reset()
-{
-    m_private.reset();
-}
-
-} // namespace blink