Fire visibilityChange event on out-of-process iframes.

third_party/WebKit/Source/web/WebViewImpl.cpp

Index: third_party/WebKit/Source/web/WebViewImpl.cpp
diff --git a/third_party/WebKit/Source/web/WebViewImpl.cpp b/third_party/WebKit/Source/web/WebViewImpl.cpp
index fad565d27c6eaef57d89c1087056567fb40a7363..502a27776939782eea2731eb7285c31c839bf296 100644
--- a/third_party/WebKit/Source/web/WebViewImpl.cpp
+++ b/third_party/WebKit/Source/web/WebViewImpl.cpp
@@ -333,16 +333,16 @@ private:
 
 // WebView ----------------------------------------------------------------
 
-WebView* WebView::create(WebViewClient* client)
+WebView* WebView::create(WebViewClient* client, bool isVisible)
 {
     // Pass the WebViewImpl's self-reference to the caller.
-    return WebViewImpl::create(client);
+    return WebViewImpl::create(client, isVisible);
 }
 
-WebViewImpl* WebViewImpl::create(WebViewClient* client)
+WebViewImpl* WebViewImpl::create(WebViewClient* client, bool isVisible)
 {
     // Pass the WebViewImpl's self-reference to the caller.
-    return adoptRef(new WebViewImpl(client)).leakRef();
+    return adoptRef(new WebViewImpl(client, isVisible)).leakRef();
 }
 
 void WebView::setUseExternalPopupMenus(bool useExternalPopupMenus)
@@ -400,7 +400,7 @@ HashSet<WebViewImpl*>& WebViewImpl::allInstances()
     return allInstances;
 }
 
-WebViewImpl::WebViewImpl(WebViewClient* client)
+WebViewImpl::WebViewImpl(WebViewClient* client, bool isVisible)
     : m_client(client)
     , m_spellCheckClient(nullptr)
     , m_chromeClientImpl(ChromeClientImpl::create(this))
@@ -468,9 +468,7 @@ WebViewImpl::WebViewImpl(WebViewClient* client)
     provideDedicatedWorkerGlobalScopeProxyProviderTo(*m_page, DedicatedWorkerGlobalScopeProxyProviderImpl::create());
     StorageNamespaceController::provideStorageNamespaceTo(*m_page, &m_storageClientImpl);
 
-    if (m_client) {
-        setVisibilityState(m_client->visibilityState(), true);
-    }
+    setVisibilityState(isVisible ? WebPageVisibilityStateVisible : WebPageVisibilityStateHidden, true);
 
     initializeLayerTreeView();