Count visible password fields on a page

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)
@@ skipping 146 matching lines @@
   // change.
   // In addition, this function will always return true for a detached frame.
   // TODO(dcheng): Move this to LocalDOMWindow and figure out the right
   // behavior for detached windows.
   bool isCrossOriginSubframe() const;
 
   InstrumentingAgents* instrumentingAgents() {
     return m_instrumentingAgents.get();
   }
 
+  // LocalFrame maintains a counter of visible non-secure password
+  // fields in the frame. Used to notify the embedder when all visible
+  // non-secure passwords fields are no longer visible.
+  void incrementPasswordCount();
+  void decrementPasswordCount();
+  uint64_t passwordCount() const;
+
   // =========================================================================
   // All public functions below this point are candidates to move out of
   // LocalFrame into another class.
 
   // See GraphicsLayerClient.h for accepted flags.
   String layerTreeAsText(unsigned flags = 0) const;
 
   void setPrinting(bool printing,
                    const FloatSize& pageSize,
                    const FloatSize& originalPageSize,
@@ skipping 86 matching lines @@
 
   float m_pageZoomFactor;
   float m_textZoomFactor;
 
   bool m_inViewSourceMode;
 
   Member<InstrumentingAgents> m_instrumentingAgents;
 
   InterfaceProvider* const m_interfaceProvider;
   InterfaceRegistry* const m_interfaceRegistry;
+
+  uint64_t m_passwordCount;

[dcheng, 2016/11/01 18:12:42]

Yeah, let's put this on Document: this *should* get set to zero when it's
detached... but this way we're sure to avoid consistency issues.

Btw, let's just make this an unsigned: renderers can't alloc more than 2GB
anyway, so getting 2^63-1 password elements seems unlikely.

[estark, 2016/11/01 18:32:26]

Done.
Done.

 };
 
 inline void LocalFrame::init() {
   m_loader.init();
 }
 
 inline LocalDOMWindow* LocalFrame::localDOMWindow() const {
   return m_domWindow.get();
 }
 
@@ skipping 89 matching lines @@
   explicit ScopedFrameBlamer(LocalFrame*);
   ~ScopedFrameBlamer();
 
  private:
   Member<LocalFrame> m_frame;
 };
 
 }  // namespace blink
 
 #endif  // LocalFrame_h