Don't composite layers with an invisible frameview.

third_party/WebKit/Source/core/layout/LayoutTestHelper.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/layout/LayoutTestHelper.h"
 
 #include "core/frame/FrameHost.h"
 #include "core/html/HTMLIFrameElement.h"
 #include "platform/graphics/test/FakeGraphicsLayerFactory.h"
 #include "platform/scroll/ScrollbarTheme.h"
@@ skipping 49 matching lines @@
 }
 
 Document& RenderingTest::setupChildIframe(const AtomicString& iframeElementId, const String& htmlContentOfIframe)
 {
 
     HTMLIFrameElement& iframe = *toHTMLIFrameElement(document().getElementById(iframeElementId));
     m_frameLoaderClient = FrameLoaderClientWithParent::create(document().frame());
     m_subframe = LocalFrame::create(m_frameLoaderClient.get(), document().frame()->host(), &iframe);
     m_subframe->setView(FrameView::create(m_subframe.get(), IntSize(500, 500)));
     m_subframe->init();
+    m_subframe->view()->setParentVisible(true);
+    m_subframe->view()->setSelfVisible(true);
     static_cast<SingleChildFrameLoaderClient*>(document().frame()->client())->setChild(m_subframe.get());
     document().frame()->host()->incrementSubframeCount();
     Document& frameDocument = *iframe.contentDocument();
 
     frameDocument.setBaseURLOverride(KURL(ParsedURLString, "http://test.com"));
     frameDocument.body()->setInnerHTML(htmlContentOfIframe, ASSERT_NO_EXCEPTION);
     return frameDocument;
 }
 
 } // namespace blink