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..dcec94e0a52a19a46a24b334e797f90fc1e4096a 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&);
@@ -499,6 +503,8 @@ private:
 
     void updateMainFrameScrollPosition(const WebCore::IntPoint& scrollPosition, bool programmaticScroll);
 
+    void performResize();
+
     friend class WebView;  // So WebView::Create can call our constructor
     friend class WTF::RefCounted<WebViewImpl>;
     friend void setCurrentInputEventForTest(const WebInputEvent*);