Remove SafePointAwareMutexLocker

third_party/WebKit/Source/platform/heap/ThreadState.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 41 matching lines @@
 };
 
 namespace blink {
 
 class BasePage;
 class CallbackStack;
 class GarbageCollectedMixinConstructorMarker;
 class PersistentNode;
 class PersistentRegion;
 class BaseArena;
-class SafePointAwareMutexLocker;
 class SafePointBarrier;
 class ThreadHeap;
 class ThreadState;
 class Visitor;
 
 // Declare that a class has a pre-finalizer. The pre-finalizer is called
 // before any object gets swept, so it is safe to touch on-heap objects
 // that may be collected in the same GC cycle. If you cannot avoid touching
 // on-heap objects in a destructor (which is not allowed), you can consider
 // using the pre-finalizer. The only restriction is that the pre-finalizer
@@ skipping 256 matching lines @@
   //     that have no calls to safePoint and are not wrapped in a SafePointScope
   //     (e.g. BlinkGCInterruptor for JavaScript code)
   //
 
   // Check if GC is requested by another thread and pause this thread if this is
   // the case.  Can only be called when current thread is in a consistent state.
   void safePoint(BlinkGC::StackState);
 
   // Mark current thread as running inside safepoint.
   void enterSafePoint(BlinkGC::StackState, void*);
-  void leaveSafePoint(SafePointAwareMutexLocker* = nullptr);
+  void leaveSafePoint();
   bool isAtSafePoint() const { return m_atSafePoint; }
 
   void addInterruptor(std::unique_ptr<BlinkGCInterruptor>);
 
   void recordStackEnd(intptr_t* endOfStack) { m_endOfStack = endOfStack; }
 
   // Get one of the heap structures for this thread.
   // The thread heap is split into multiple heap parts based on object types
   // and object sizes.
   BaseArena* arena(int arenaIndex) const {
@@ skipping 267 matching lines @@
   int arenaIndexOfVectorArenaLeastRecentlyExpanded(int beginArenaIndex,
                                                    int endArenaIndex);
 
   void reportMemoryToV8();
 
   // Should only be called under protection of threadAttachMutex().
   const Vector<std::unique_ptr<BlinkGCInterruptor>>& interruptors() const {
     return m_interruptors;
   }
 
-  friend class SafePointAwareMutexLocker;
   friend class SafePointBarrier;
   friend class SafePointScope;
 
   static WTF::ThreadSpecific<ThreadState*>* s_threadSpecific;
 
   // We can't create a static member of type ThreadState here
   // because it will introduce global constructor and destructor.
   // We would like to manage lifetime of the ThreadState attached
   // to the main thread explicitly instead and still use normal
   // constructor and destructor for the ThreadState class.
@@ skipping 92 matching lines @@
 class ThreadStateFor<AnyThread> {
   STATIC_ONLY(ThreadStateFor);
 
  public:
   static ThreadState* state() { return ThreadState::current(); }
 };
 
 }  // namespace blink
 
 #endif  // ThreadState_h