Replace RenderArena with PartitionAlloc.

Source/core/html/shadow/TextControlInnerElements.h

Index: Source/core/html/shadow/TextControlInnerElements.h
diff --git a/Source/core/html/shadow/TextControlInnerElements.h b/Source/core/html/shadow/TextControlInnerElements.h
index 78ad561b49da932ac88387e96230e9cb926f0008..2bb6e24a6902dc5cc6b68b240848625acbb716f4 100644
--- a/Source/core/html/shadow/TextControlInnerElements.h
+++ b/Source/core/html/shadow/TextControlInnerElements.h
@@ -40,7 +40,7 @@ public:
     static PassRefPtr<TextControlInnerContainer> create(Document*);
 protected:
     TextControlInnerContainer(Document*);
-    virtual RenderObject* createRenderer(RenderArena*, RenderStyle*);
+    virtual RenderObject* createRenderer(RenderStyle*);
 };
 
 class TextControlInnerElement FINAL : public HTMLDivElement {
@@ -63,7 +63,7 @@ public:
 
 private:
     TextControlInnerTextElement(Document*);
-    virtual RenderObject* createRenderer(RenderArena*, RenderStyle*);
+    virtual RenderObject* createRenderer(RenderStyle*);
     virtual PassRefPtr<RenderStyle> customStyleForRenderer() OVERRIDE;
     virtual bool isMouseFocusable() const { return false; }
 };