Move Frame to the Oilpan heap.

Source/core/frame/SmartClip.h

Index: Source/core/frame/SmartClip.h
diff --git a/Source/core/frame/SmartClip.h b/Source/core/frame/SmartClip.h
index 4a6ac163de5b41789be87b18dc644f0c3d6c0307..34f8f9f3964962bf6562d65b35e0ac6442a0e8f4 100644
--- a/Source/core/frame/SmartClip.h
+++ b/Source/core/frame/SmartClip.h
@@ -33,6 +33,7 @@
 
 #include "core/dom/Node.h"
 #include "core/frame/LocalFrame.h"
+#include "platform/heap/Handle.h"
 
 namespace blink {
 
@@ -65,8 +66,9 @@ private:
 // trying to do a poor-mans implementation of columnar
 // selection followed by a copy operation.
 class SmartClip {
+    STACK_ALLOCATED();
 public:
-    explicit SmartClip(PassRefPtr<LocalFrame>);
+    explicit SmartClip(PassRefPtrWillBeRawPtr<LocalFrame>);
 
     SmartClipData dataForRect(const IntRect&);
 
@@ -80,7 +82,7 @@ private:
     IntRect convertRectToWindow(const IntRect& nodeRect);
     String extractTextFromNode(Node*);
 
-    RefPtr<LocalFrame> m_frame;
+    RefPtrWillBeMember<LocalFrame> m_frame;
 };
 
 } // namespace blink