Revert of Move collectGarbage* methods to ThreadState

third_party/WebKit/Source/platform/heap/Heap.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 333 matching lines @@
         // The allocation size calculation can overflow for large sizes.
         RELEASE_ASSERT(allocationSize > size);
         // Align size with allocation granularity.
         allocationSize = (allocationSize + allocationMask) & ~allocationMask;
         return allocationSize;
     }
     static Address allocateOnArenaIndex(ThreadState*, size_t, int arenaIndex, size_t gcInfoIndex, const char* typeName);
     template<typename T> static Address allocate(size_t, bool eagerlySweep = false);
     template<typename T> static Address reallocate(void* previous, size_t);
 
+    static const char* gcReasonString(BlinkGC::GCReason);
+    static void collectGarbage(BlinkGC::StackState, BlinkGC::GCType, BlinkGC::GCReason);
+    static void collectGarbageForTerminatingThread(ThreadState*);
+    static void collectAllGarbage();
+
     void processMarkingStack(Visitor*);
     void postMarkingProcessing(Visitor*);
     void globalWeakProcessing(Visitor*);
 
     void preGC();
     void postGC(BlinkGC::GCType);
 
     // Conservatively checks whether an address is a pointer in any of the
     // thread heaps.  If so marks the object pointed to as live.
     Address checkAndMarkPointer(Visitor*, Address);
@@ skipping 255 matching lines @@
 void VisitorHelper<Derived>::handleWeakCell(Visitor* self, void* object)
 {
     T** cell = reinterpret_cast<T**>(object);
     if (*cell && !ObjectAliveTrait<T>::isHeapObjectAlive(*cell))
         *cell = nullptr;
 }
 
 } // namespace blink
 
 #endif // Heap_h