Add setNeedsLayoutAndFullPaintInvalidation to WebWidget.

Source/web/WebViewImpl.cpp

Index: Source/web/WebViewImpl.cpp
diff --git a/Source/web/WebViewImpl.cpp b/Source/web/WebViewImpl.cpp
index 48c5120e1a3c90d399edb2a6627479408dac94e3..aa9c0c56bccd29c71180100aff6a108e5fb3b97e 100644
--- a/Source/web/WebViewImpl.cpp
+++ b/Source/web/WebViewImpl.cpp
@@ -1914,6 +1914,16 @@ void WebViewImpl::beginFrame(const WebBeginFrameArgs& frameTime)
     }
 }
 
+void WebViewImpl::setNeedsLayoutAndFullPaintInvalidation()
+{
+    if (!mainFrameImpl() || !mainFrameImpl()->frame() || !mainFrameImpl()->frame()->view())
+        return;
+
+    FrameView* view = mainFrameImpl()->frame()->view();
+    view->setNeedsLayout();
+    view->setNeedsFullPaintInvalidation();
+}
+
 void WebViewImpl::layout()
 {
     TRACE_EVENT0("blink", "WebViewImpl::layout");