[tracing] Fixing freelist snapshot of blink gc dump provider.

Source/platform/heap/Heap.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 554 matching lines @@
     for (BasePage* page = m_firstUnsweptPage; page; page = page->next()) {
         if (page->contains(address))
             return true;
     }
     return false;
 }
 #endif
 
 void NormalPageHeap::takeFreelistSnapshot(const String& dumpName)
 {
-    if (m_freeList.takeSnapshot(dumpName) && m_firstUnsweptPage) {
+    if (m_freeList.takeSnapshot(dumpName)) {
         WebMemoryAllocatorDump* bucketsDump = BlinkGCMemoryDumpProvider::instance()->createMemoryAllocatorDumpForCurrentGC(dumpName + "/buckets");
         WebMemoryAllocatorDump* pagesDump = BlinkGCMemoryDumpProvider::instance()->createMemoryAllocatorDumpForCurrentGC(dumpName + "/pages");
         BlinkGCMemoryDumpProvider::instance()->currentProcessMemoryDump()->AddOwnershipEdge(pagesDump->guid(), bucketsDump->guid());
     }
 }
 
 #if ENABLE(GC_PROFILING)
 void NormalPageHeap::snapshotFreeList(TracedValue& json)
 {
     json.setInteger("cumulativeAllocationSize", m_cumulativeAllocationSize);
@@ skipping 1858 matching lines @@
 size_t Heap::s_allocatedObjectSize = 0;
 size_t Heap::s_allocatedSpace = 0;
 size_t Heap::s_markedObjectSize = 0;
 // We don't want to use 0 KB for the initial value because it may end up
 // triggering the first GC of some thread too prematurely.
 size_t Heap::s_estimatedLiveObjectSize = 512 * 1024;
 size_t Heap::s_externalObjectSizeAtLastGC = 0;
 double Heap::s_estimatedMarkingTimePerByte = 0.0;
 
 } // namespace blink