Fire visibilityChange event on out-of-process iframes.

third_party/WebKit/Source/web/WebFrameWidgetImpl.cpp

Index: third_party/WebKit/Source/web/WebFrameWidgetImpl.cpp
diff --git a/third_party/WebKit/Source/web/WebFrameWidgetImpl.cpp b/third_party/WebKit/Source/web/WebFrameWidgetImpl.cpp
index 4998d018a4b0aa5acf4cb15650c0c993af9e3956..763822451346f1c18035797a41108909cc0cd99a 100644
--- a/third_party/WebKit/Source/web/WebFrameWidgetImpl.cpp
+++ b/third_party/WebKit/Source/web/WebFrameWidgetImpl.cpp
@@ -1091,21 +1091,10 @@ void WebFrameWidgetImpl::detachCompositorAnimationTimeline(CompositorAnimationTi
         m_layerTreeView->detachCompositorAnimationTimeline(compositorTimeline->animationTimeline());
 }
 
-void WebFrameWidgetImpl::setVisibilityState(WebPageVisibilityState visibilityState, bool isInitialState)
+void WebFrameWidgetImpl::setVisibilityState(WebPageVisibilityState visibilityState)
 {
-    if (!page())
-        return;
-
-    // FIXME: This is not correct, since Show and Hide messages for a frame's Widget do not necessarily
-    // correspond to Page visibility, but is necessary until we properly sort out OOPIF visibility.
-    page()->setVisibilityState(static_cast<PageVisibilityState>(visibilityState), isInitialState);
-
-    m_localRoot->frame()->frameScheduler()->setPageVisible(visibilityState == WebPageVisibilityStateVisible);
-
-    if (m_layerTreeView) {
-        bool visible = visibilityState == WebPageVisibilityStateVisible;
-        m_layerTreeView->setVisible(visible);
-    }
+    if (m_layerTreeView)
+        m_layerTreeView->setVisible(visibilityState == WebPageVisibilityStateVisible);
 }
 
 HitTestResult WebFrameWidgetImpl::hitTestResultForRootFramePos(const IntPoint& posInRootFrame)