Oilpan: fix build after r351868.

third_party/WebKit/Source/core/paint/FramePainter.h

Index: third_party/WebKit/Source/core/paint/FramePainter.h
diff --git a/third_party/WebKit/Source/core/paint/FramePainter.h b/third_party/WebKit/Source/core/paint/FramePainter.h
index 6ef01b8052fe4032861998e8255a0091e20dd14e..f1b91f825f817d36f1c2de2f51ba98eb764f061f 100644
--- a/third_party/WebKit/Source/core/paint/FramePainter.h
+++ b/third_party/WebKit/Source/core/paint/FramePainter.h
@@ -19,7 +19,7 @@ class FramePainter {
     STACK_ALLOCATED();
     WTF_MAKE_NONCOPYABLE(FramePainter);
 public:
-    explicit FramePainter(const FrameView& frameView) : m_frameView(frameView) { }
+    explicit FramePainter(const FrameView& frameView) : m_frameView(&frameView) { }
 
     void paint(GraphicsContext*, const GlobalPaintFlags, const IntRect&);
     void paintScrollbars(GraphicsContext*, const IntRect&);
@@ -29,7 +29,9 @@ public:
 private:
     void paintScrollbar(GraphicsContext*, Scrollbar*, const IntRect&);
 
-    const FrameView& m_frameView;
+    const FrameView& frameView();
+
+    RawPtrWillBeMember<const FrameView> m_frameView;
     static bool s_inPaintContents;
 };