Introduce ProcessHeap

third_party/WebKit/Source/platform/heap/HeapPage.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 1122 matching lines @@
             // that memory on the freelist is zero filled.
             SET_MEMORY_INACCESSIBLE(headerAddress, size);
             headerAddress += size;
             continue;
         }
         if (startOfGap != headerAddress) {
             pageArena->addToFreeList(startOfGap, headerAddress - startOfGap);
 #if !ENABLE(ASSERT) && !defined(LEAK_SANITIZER) && !defined(ADDRESS_SANITIZER)
             // Discarding pages increases page faults and may regress performance.
             // So we enable this only on low-RAM devices.
-            if (Heap::isLowEndDevice())
+            if (ProcessHeap::isLowEndDevice())
                 discardPages(startOfGap + sizeof(FreeListEntry), headerAddress);
 #endif
         }
         header->unmark();
         headerAddress += size;
         markedObjectSize += size;
         startOfGap = headerAddress;
     }
     if (startOfGap != payloadEnd()) {
         pageArena->addToFreeList(startOfGap, payloadEnd() - startOfGap);
 #if !ENABLE(ASSERT) && !defined(LEAK_SANITIZER) && !defined(ADDRESS_SANITIZER)
-        if (Heap::isLowEndDevice())
+        if (ProcessHeap::isLowEndDevice())
             discardPages(startOfGap + sizeof(FreeListEntry), payloadEnd());
 #endif
     }
 
     if (markedObjectSize)
         pageArena->getThreadState()->increaseMarkedObjectSize(markedObjectSize);
 }
 
 void NormalPage::makeConsistentForGC()
 {
@@ skipping 395 matching lines @@
 
     m_hasEntries = true;
     size_t index = hash(address);
     ASSERT(!(index & 1));
     Address cachePage = roundToBlinkPageStart(address);
     m_entries[index + 1] = m_entries[index];
     m_entries[index] = cachePage;
 }
 
 } // namespace blink