Fire visibilityChange event on out-of-process iframes.

third_party/WebKit/public/web/WebView.h

Index: third_party/WebKit/public/web/WebView.h
diff --git a/third_party/WebKit/public/web/WebView.h b/third_party/WebKit/public/web/WebView.h
index c8a6244d72ea5a619cad8632d597ea76f2af8d21..05da0513dc9f4140e8091c6118f5f85b117ab87a 100644
--- a/third_party/WebKit/public/web/WebView.h
+++ b/third_party/WebKit/public/web/WebView.h
@@ -127,7 +127,7 @@ public:
     // Creates a WebView that is NOT yet initialized. You will need to
     // call setMainFrame to finish the initialization. It is valid
     // to pass a null client pointer.
-    BLINK_EXPORT static WebView* create(WebViewClient*);
+    BLINK_EXPORT static WebView* create(WebViewClient*, bool);

[Charlie Reis, 2016/06/06 23:15:09]

This seems like it needs some explanation.  (At first glance, I'm not sure if it
means visible or hidden, even knowing the context of this CL.  And worse, it
means visible, but we use hidden in other places like
FrameTree::CreateRenderViewHost.)

[dcheng, 2016/06/07 05:28:57]

We should just plumb WebPageVisibilityState through here.

[lfg, 2016/06/08 20:00:24]

Done.

 
     // After creating a WebView, you should immediately call this method.
     // You can optionally modify the settings before calling this method.