PartitionAlloc: Centralize Partition allocators into one place (Part 1)

Source/wtf/Partitions.h

Index: Source/wtf/Partitions.h
diff --git a/Source/platform/Partitions.h b/Source/wtf/Partitions.h
similarity index 84%
rename from Source/platform/Partitions.h
rename to Source/wtf/Partitions.h
index adfab7b72d1d85db7f4757f79148362100884f08..4529ba0cd008b8ccede2d06a42842adf253b27e7 100644
--- a/Source/platform/Partitions.h
+++ b/Source/wtf/Partitions.h
@@ -31,15 +31,21 @@
 #ifndef Partitions_h
 #define Partitions_h
 
-#include "platform/PlatformExport.h"
 #include "wtf/PartitionAlloc.h"
+#include "wtf/WTFExport.h"
 
-namespace blink {
+namespace WTF {
 
-class PLATFORM_EXPORT Partitions {
+class WTF_EXPORT Partitions {
 public:
-    static void init();
+    static void initialize();
     static void shutdown();
+    ALWAYS_INLINE static PartitionRootGeneric* getBufferPartition()
+    {
+        if (UNLIKELY(!s_initialized))
+            initialize();
+        return m_bufferAllocator.root();
+    }
 
     ALWAYS_INLINE static PartitionRoot* getObjectModelPartition() { return m_objectModelAllocator.root(); }
     ALWAYS_INLINE static PartitionRoot* getRenderingPartition() { return m_renderingAllocator.root(); }
@@ -50,10 +56,12 @@ public:
     }
 
 private:
+    static bool s_initialized;
+    static PartitionAllocatorGeneric m_bufferAllocator;
     static SizeSpecificPartitionAllocator<3328> m_objectModelAllocator;
     static SizeSpecificPartitionAllocator<1024> m_renderingAllocator;
 };
 
-} // namespace blink
+} // namespace WTF
 
 #endif // Partitions_h