Remove current implementation of frame timing events.

third_party/WebKit/public/platform/WebFrameTimingEvent.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 WebFrameTimingEvent_h
-#define WebFrameTimingEvent_h
-
-namespace blink {
-
-// A struct to pass PerformanceRenderEvent or PerformanceCompositeEvent info
-// to Blink.
-struct WebFrameTimingEvent {
-    WebFrameTimingEvent(unsigned sourceFrame, double startTime, double finishTime)
-        : sourceFrame(sourceFrame)
-        , startTime(startTime)
-        , finishTime(finishTime)
-    {
-    }
-
-    WebFrameTimingEvent(unsigned sourceFrame, double startTime)
-        : sourceFrame(sourceFrame)
-        , startTime(startTime)
-    {
-    }
-
-    WebFrameTimingEvent() { }
-
-    WebFrameTimingEvent& operator=(const WebFrameTimingEvent& rhs)
-    {
-        sourceFrame = rhs.sourceFrame;
-        startTime = rhs.startTime;
-        finishTime = rhs.finishTime;
-        return *this;
-    }
-    unsigned sourceFrame;
-    double startTime;
-    double finishTime;
-};
-
-} // namespace blink
-
-#endif