Enable resize and layout for frames with RemoteFrame ancestors

Source/web/WebViewImpl.h

Index: Source/web/WebViewImpl.h
diff --git a/Source/web/WebViewImpl.h b/Source/web/WebViewImpl.h
index 7b92a473c6867e2f8537fd9ef9a0bed9223baf75..6d5d539b50c7e49849fdbe32a4adfdd291886660 100644
--- a/Source/web/WebViewImpl.h
+++ b/Source/web/WebViewImpl.h
@@ -314,6 +314,10 @@ public:
     // the page is shutting down, but will be valid at all other times.
     WebLocalFrameImpl* mainFrameImpl();
 
+    // FIXME: Temporary method to accommodate out-of-process frame ancestors;
+    // will be removed when there can be multiple WebWidgets for a single page.
+    WebLocalFrameImpl* localFrameRootTemporary();
+
     // Event related methods:
     void mouseContextMenu(const WebMouseEvent&);
     void mouseDoubleClick(const WebMouseEvent&);