Add a test that we resume commits after inserting the body.

Source/web/WebViewImpl.cpp

Index: Source/web/WebViewImpl.cpp
diff --git a/Source/web/WebViewImpl.cpp b/Source/web/WebViewImpl.cpp
index 4228b9422e46d6bc963174afd94e3f0adc782f8f..af1f6f3a44a25e4fae1e654d8c4a07f92ca2a4f9 100644
--- a/Source/web/WebViewImpl.cpp
+++ b/Source/web/WebViewImpl.cpp
@@ -75,6 +75,7 @@
 #include "core/loader/FrameLoadRequest.h"
 #include "core/loader/FrameLoader.h"
 #include "core/loader/FrameLoaderClient.h"
+#include "core/loader/FrameLoaderStateMachine.h"
 #include "core/page/ContextMenuController.h"
 #include "core/page/ContextMenuProvider.h"
 #include "core/page/DragController.h"
@@ -3910,6 +3911,8 @@ void WebViewImpl::didRemoveAllPendingStylesheet(WebLocalFrameImpl* webframe)
 
 void WebViewImpl::resumeTreeViewCommits()
 {
+    if (!mainFrameImpl()->frame()->loader().stateMachine()->committedFirstRealDocumentLoad())
+        return;
     if (m_layerTreeView)
         m_layerTreeView->setDeferCommits(false);
 }