Replace RenderArena with PartitionAlloc.

Source/core/rendering/BidiRun.cpp

Index: Source/core/rendering/BidiRun.cpp
diff --git a/Source/core/rendering/BidiRun.cpp b/Source/core/rendering/BidiRun.cpp
index b75c5bc07325d9a45fee0d021a526bdfe6da6796..53df15bf9d23d8e9b5282e623e9861107cda6a96 100644
--- a/Source/core/rendering/BidiRun.cpp
+++ b/Source/core/rendering/BidiRun.cpp
@@ -23,7 +23,8 @@
 
 #include "config.h"
 #include "core/rendering/BidiRun.h"
-#include "core/rendering/RenderArena.h"
+
+#include "core/platform/Partitions.h"
 #include <wtf/RefCountedLeakCounter.h>
 #include <wtf/StdLibExtras.h>
 
@@ -33,42 +34,27 @@ namespace WebCore {
 
 DEFINE_DEBUG_ONLY_GLOBAL(RefCountedLeakCounter, bidiRunCounter, ("BidiRun"));
 
-#ifndef NDEBUG
-static bool inBidiRunDestroy;
-#endif
-
 void BidiRun::destroy()
 {
-#ifndef NDEBUG
-    inBidiRunDestroy = true;
-#endif
-    RenderArena* renderArena = m_object->renderArena();
     delete this;
-#ifndef NDEBUG
-    inBidiRunDestroy = false;
-#endif
-
-    // Recover the size left there for us by operator delete and free the memory.
-    renderArena->free(*reinterpret_cast<size_t*>(this), this);
 }
 
-void* BidiRun::operator new(size_t sz, RenderArena* renderArena)
+#if ENABLE(PARTITION_ALLOC)
+void* BidiRun::operator new(size_t sz)
 {
 #ifndef NDEBUG
     bidiRunCounter.increment();
 #endif
-    return renderArena->allocate(sz);
+    return partitionAlloc(Partitions::getRenderingPartition(), sz);
 }
 
-void BidiRun::operator delete(void* ptr, size_t sz)
+void BidiRun::operator delete(void* ptr)
 {
 #ifndef NDEBUG
     bidiRunCounter.decrement();
 #endif
-    ASSERT(inBidiRunDestroy);
-
-    // Stash size where destroy() can find it.
-    *(size_t*)ptr = sz;
+    partitionFree(ptr);
 }
+#endif
 
 }