Move Frame to the Oilpan heap.

Source/core/editing/Editor.h

Index: Source/core/editing/Editor.h
diff --git a/Source/core/editing/Editor.h b/Source/core/editing/Editor.h
index 4008c057e7b4c601d9184f38cec3514b46b3333b..12767005b0d0ae4972526af35f523a4e0371fedc 100644
--- a/Source/core/editing/Editor.h
+++ b/Source/core/editing/Editor.h
@@ -71,7 +71,7 @@ public:
 
     EditorClient& client() const;
 
-    LocalFrame& frame() const { return m_frame; }
+    LocalFrame& frame() const { return *m_frame; }
 
     CompositeEditCommand* lastEditCommand() { return m_lastEditCommand.get(); }
 
@@ -130,9 +130,10 @@ public:
     bool shouldStyleWithCSS() const { return m_shouldStyleWithCSS; }
 
     class Command {
+        STACK_ALLOCATED();
     public:
         Command();
-        Command(const EditorInternalCommand*, EditorCommandSource, PassRefPtr<LocalFrame>);
+        Command(const EditorInternalCommand*, EditorCommandSource, PassRefPtrWillBeRawPtr<LocalFrame>);
 
         bool execute(const String& parameter = String(), Event* triggeringEvent = 0) const;
         bool execute(Event* triggeringEvent) const;
@@ -150,7 +151,7 @@ public:
     private:
         const EditorInternalCommand* m_command;
         EditorCommandSource m_source;
-        RefPtr<LocalFrame> m_frame;
+        RefPtrWillBeMember<LocalFrame> m_frame;
     };
     Command command(const String& commandName); // Command source is CommandFromMenuOrKeyBinding.
     Command command(const String& commandName, EditorCommandSource);
@@ -238,7 +239,7 @@ public:
     void trace(Visitor*);
 
 private:
-    LocalFrame& m_frame;
+    RawPtrWillBeMember<LocalFrame> m_frame;
     RefPtrWillBeMember<CompositeEditCommand> m_lastEditCommand;
     int m_preventRevealSelection;
     bool m_shouldStartNewKillRingSequence;