Harden the machinery around updateWidgetPositions()

Source/web/WebViewImpl.cpp

Index: Source/web/WebViewImpl.cpp
diff --git a/Source/web/WebViewImpl.cpp b/Source/web/WebViewImpl.cpp
index f30cd86ec18a4df2a92b78269832ff99fa187fdc..7cc5933f009e0d2bfe45dc27c4a587c58976b285 100644
--- a/Source/web/WebViewImpl.cpp
+++ b/Source/web/WebViewImpl.cpp
@@ -2902,7 +2902,7 @@ void WebViewImpl::updateMainFrameLayoutSize()
     if (m_fixedLayoutSizeLock || !mainFrameImpl())
         return;
 
-    FrameView* view = mainFrameImpl()->frameView();
+    RefPtr<FrameView> view = mainFrameImpl()->frameView();
     if (!view)
         return;
 
@@ -2998,7 +2998,7 @@ void WebViewImpl::setFixedLayoutSize(const WebSize& layoutSize)
     if (!frame)
         return;
 
-    FrameView* view = frame->view();
+    RefPtr<FrameView> view = frame->view();
     if (!view)
         return;