[Oilpan] Set stack limit using estimated sizes (Re-land)

Source/platform/heap/ThreadState.cpp

 /*
  * 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 237 matching lines @@
 #if ENABLE(GC_PROFILING)
     , m_nextFreeListSnapshotTime(-std::numeric_limits<double>::infinity())
 #endif
 {
     checkThread();
     ASSERT(!**s_threadSpecific);
     **s_threadSpecific = this;
 
     if (isMainThread()) {
         s_mainThreadStackStart = reinterpret_cast<uintptr_t>(m_startOfStack) - sizeof(void*);
-        s_mainThreadUnderestimatedStackSize = StackFrameDepth::getUnderestimatedStackSize() - sizeof(void*);
+        size_t underestimatedStackSize = StackFrameDepth::getUnderestimatedStackSize();
+        if (underestimatedStackSize > sizeof(void*))
+            s_mainThreadUnderestimatedStackSize = underestimatedStackSize - sizeof(void*);
     }
 
     for (int heapIndex = 0; heapIndex < LargeObjectHeapIndex; heapIndex++)
         m_heaps[heapIndex] = new NormalPageHeap(this, heapIndex);
     m_heaps[LargeObjectHeapIndex] = new LargeObjectHeap(this, LargeObjectHeapIndex);
 
     m_weakCallbackStack = new CallbackStack();
 }
 
 ThreadState::~ThreadState()
@@ skipping 1009 matching lines @@
         json->beginArray(it->key.ascii().data());
         for (size_t age = 0; age <= maxHeapObjectAge; ++age)
             json->pushInteger(it->value.ages[age]);
         json->endArray();
     }
     TRACE_EVENT_OBJECT_SNAPSHOT_WITH_ID(TRACE_DISABLED_BY_DEFAULT("blink_gc"), statsName, this, json.release());
 }
 #endif
 
 } // namespace blink