Move Document pointer from Frame to LocalFrame.

Source/core/frame/LocalFrame.h

Index: Source/core/frame/LocalFrame.h
diff --git a/Source/core/frame/LocalFrame.h b/Source/core/frame/LocalFrame.h
index 030ac7529a194a8bc01b6249462ed53574199f87..22fd1b3e6067640808e78c812fae368c714c7f20 100644
--- a/Source/core/frame/LocalFrame.h
+++ b/Source/core/frame/LocalFrame.h
@@ -38,6 +38,7 @@
 namespace WebCore {
 
     class Color;
+    class Document;
     class DragImage;
     class Editor;
     class EventHandler;
@@ -51,6 +52,7 @@ namespace WebCore {
     class IntSize;
     class Node;
     class Range;
+    class RenderView;
     class TreeScope;
     class ScriptController;
     class SpellChecker;
@@ -74,8 +76,13 @@ namespace WebCore {
         virtual void willDetachFrameHost() OVERRIDE;
         virtual void detachFromFrameHost() OVERRIDE;
 
+        virtual void disconnectOwnerElement() OVERRIDE;
+
         virtual void setDOMWindow(PassRefPtrWillBeRawPtr<DOMWindow>) OVERRIDE;
         FrameView* view() const;
+        Document* document() const;
+
+        RenderView* contentRenderer() const; // Root of the render tree for the document contained in this frame.
 
         Editor& editor() const;
         EventHandler& eventHandler() const;