Fire visibilityChange event on out-of-process iframes.

third_party/WebKit/Source/web/tests/FrameLoaderClientImplTest.cpp

 /*
  * Copyright (C) 2011, 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 45 matching lines @@
     MOCK_METHOD0(userAgentOverride, WebString());
 };
 
 class FrameLoaderClientImplTest : public ::testing::Test {
 protected:
     void SetUp() override
     {
         ON_CALL(m_webFrameClient, userAgentOverride()).WillByDefault(Return(WebString()));
 
         FrameTestHelpers::TestWebViewClient webViewClient;
-        m_webView = WebView::create(&webViewClient);
+        m_webView = WebView::create(&webViewClient, WebPageVisibilityStateVisible);
         // FIXME: http://crbug.com/363843. This needs to find a better way to
         // not create graphics layers.
         m_webView->settings()->setAcceleratedCompositingEnabled(false);
         m_mainFrame = WebLocalFrame::create(WebTreeScopeType::Document, &m_webFrameClient);
         m_webView->setMainFrame(m_mainFrame);
     }
 
     void TearDown() override
     {
         m_webView->close();
@@ skipping 28 matching lines @@
     EXPECT_TRUE(overrideUserAgent.equals(userAgent()));
     Mock::VerifyAndClearExpectations(&webFrameClient());
 
     // Remove the override and make sure we get the original back.
     EXPECT_CALL(webFrameClient(), userAgentOverride()).WillOnce(Return(WebString()));
     EXPECT_TRUE(defaultUserAgent.equals(userAgent()));
 }
 
 } // namespace
 } // namespace blink