Fire visibilityChange event on out-of-process iframes.

third_party/WebKit/public/web/WebView.h

 /*
  * Copyright (C) 2009, 2010, 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 108 matching lines @@
     using WebWidget::didLosePointerLock;
     using WebWidget::didChangeWindowResizerRect;
     using WebWidget::backgroundColor;
     using WebWidget::pagePopup;
     using WebWidget::updateTopControlsState;
 
     // Initialization ------------------------------------------------------
 
     // 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*);
+    // to pass a null client pointer. The WebPageVisibilityState defines the
+    // initial visibility of the page.
+    BLINK_EXPORT static WebView* create(WebViewClient*, WebPageVisibilityState);
 
     // After creating a WebView, you should immediately call this method.
     // You can optionally modify the settings before calling this method.
     // This WebFrame will receive events for the main frame and must not
     // be null.
     virtual void setMainFrame(WebFrame*) = 0;
 
     // Initializes the various client interfaces.
     virtual void setCredentialManagerClient(WebCredentialManagerClient*) = 0;
     virtual void setPrerendererClient(WebPrerendererClient*) = 0;
@@ skipping 393 matching lines @@
     // completed.
     WebWidget* widget() { return this; }
 
 protected:
     ~WebView() {}
 };
 
 } // namespace blink
 
 #endif