Fix the build

sky/engine/core/frame/FrameView.cpp

Index: sky/engine/core/frame/FrameView.cpp
diff --git a/sky/engine/core/frame/FrameView.cpp b/sky/engine/core/frame/FrameView.cpp
index f0639b99e21e9a353cf333b0120b64a49fa2d6f2..888b0156d32ce3dfd4e02444245c79bb81c78064 100644
--- a/sky/engine/core/frame/FrameView.cpp
+++ b/sky/engine/core/frame/FrameView.cpp
@@ -694,8 +694,6 @@ void FrameView::paint(GraphicsContext* context, const IntRect& rect)
 
 void FrameView::paintContents(GraphicsContext* p, const IntRect& rect)
 {
-    Document* document = m_frame->document();
-
 #ifndef NDEBUG
     bool fillWithRed;
     if (isTransparent())
@@ -716,7 +714,7 @@ void FrameView::paintContents(GraphicsContext* p, const IntRect& rect)
     }
 
     RELEASE_ASSERT(!needsLayout());
-    ASSERT(document->lifecycle().state() >= DocumentLifecycle::StyleAndLayoutClean);
+    ASSERT(m_frame->document()->lifecycle().state() >= DocumentLifecycle::StyleAndLayoutClean);
 
     TRACE_EVENT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline"), "Paint", "data", InspectorPaintEvent::data(renderView, rect));
     TRACE_EVENT_INSTANT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline.stack"), "CallStack", TRACE_EVENT_SCOPE_PROCESS, "stack", InspectorCallStackEvent::currentCallStack());