Remove BlinkGCInterruptor

third_party/WebKit/Source/platform/heap/BlinkGCInterruptor.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 BlinkGCInterruptor_h
-#define BlinkGCInterruptor_h
-
-#include "platform/PlatformExport.h"
-#include "wtf/Allocator.h"
-
-namespace blink {
-
-// If attached thread enters long running loop that can call back
-// into Blink and leaving and reentering safepoint at every
-// transition between this loop and Blink is deemed too expensive
-// then instead of marking this loop as a GC safepoint thread
-// can provide an interruptor object which would allow GC
-// to temporarily interrupt and pause this long running loop at
-// an arbitrary moment creating a safepoint for a GC.
-class PLATFORM_EXPORT BlinkGCInterruptor {
-  USING_FAST_MALLOC(BlinkGCInterruptor);
-
- public:
-  virtual ~BlinkGCInterruptor() {}
-
-  // Request the interruptor to interrupt the thread and
-  // call onInterrupted on that thread once interruption
-  // succeeds.
-  virtual void requestInterrupt() = 0;
-
- protected:
-  // This method is called on the interrupted thread to
-  // create a safepoint for a GC.
-  void onInterrupted();
-};
-
-}  // namespace blink
-
-#endif