Log to UMA when x-origin frames (1) are created and (2) become visible

third_party/WebKit/Source/core/frame/LocalFrame.h

 /*
  * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
  *                     1999-2001 Lars Knoll <knoll@kde.org>
  *                     1999-2001 Antti Koivisto <koivisto@kde.org>
  *                     2000-2001 Simon Hausmann <hausmann@kde.org>
  *                     2000-2001 Dirk Mueller <mueller@kde.org>
  *                     2000 Stefan Schimanski <1Stein@gmx.de>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2008 Eric Seidel <eric@webkit.org>
@@ skipping 167 matching lines @@
     void scheduleVisualUpdateUnlessThrottled();
 
     bool isNavigationAllowed() const { return m_navigationDisableCount == 0; }
 
     ServiceRegistry* serviceRegistry() { return m_serviceRegistry; }
 
     FrameLoaderClient* client() const;
 
     PluginData* pluginData() const;
 
+    void onVisibilityMaybeChanged(bool visible);
+
 private:
     friend class FrameNavigationDisabler;
 
     LocalFrame(FrameLoaderClient*, FrameHost*, FrameOwner*, ServiceRegistry*);
 
     // Internal Frame helper overrides:
     WindowProxyManager* getWindowProxyManager() const override;
     // Intentionally private to prevent redundant checks when the type is
     // already LocalFrame.
     bool isLocalFrame() const override { return true; }
@@ skipping 22 matching lines @@
     int m_navigationDisableCount;
 
     float m_pageZoomFactor;
     float m_textZoomFactor;
 
     bool m_inViewSourceMode;
 
     Member<InstrumentingAgents> m_instrumentingAgents;
 
     ServiceRegistry* const m_serviceRegistry;
+
+    bool m_visibilityWasLogged;
+    bool m_creationWasLogged;
 };
 
 inline void LocalFrame::init()
 {
     m_loader.init();
 }
 
 inline LocalDOMWindow* LocalFrame::localDOMWindow() const
 {
     return m_domWindow.get();
@@ skipping 96 matching lines @@
     explicit ScopedFrameBlamer(LocalFrame*);
     ~ScopedFrameBlamer();
 
 private:
     Member<LocalFrame> m_frame;
 };
 
 } // namespace blink
 
 #endif // LocalFrame_h