Measure usage of image/media/plugin/text documents

third_party/WebKit/Source/core/html/ImageDocument.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2010 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 86 matching lines @@
 
     ImageDocument* document() const
     {
         return toImageDocument(RawDataDocumentParser::document());
     }
 
 private:
     ImageDocumentParser(ImageDocument* document)
         : RawDataDocumentParser(document)
     {
-        UseCounter::count(document, UseCounter::ImageDocument);
     }
 
     void appendBytes(const char*, size_t) override;
     virtual void finish();
 };
 
 // --------
 
 static float pageZoomFactor(const Document* document)
 {
@@ skipping 69 matching lines @@
 ImageDocument::ImageDocument(const DocumentInit& initializer)
     : HTMLDocument(initializer, ImageDocumentClass)
     , m_imageElement(nullptr)
     , m_imageSizeIsKnown(false)
     , m_didShrinkImage(false)
     , m_shouldShrinkImage(shouldShrinkToFit())
     , m_shrinkToFitMode(frame()->settings()->viewportEnabled() ? Viewport : Desktop)
 {
     setCompatibilityMode(QuirksMode);
     lockCompatibilityMode();
+    UseCounter::count(*this, UseCounter::ImageDocument);
+    if (ownerElement())
+        UseCounter::count(*this, UseCounter::ImageDocumentInFrame);
 }
 
 DocumentParser* ImageDocument::createParser()
 {
     return ImageDocumentParser::create(this);
 }
 
 void ImageDocument::createDocumentStructure()
 {
     HTMLHtmlElement* rootElement = HTMLHtmlElement::create(*this);
@@ skipping 234 matching lines @@
 }
 
 bool ImageEventListener::operator==(const EventListener& listener) const
 {
     if (const ImageEventListener* imageEventListener = ImageEventListener::cast(&listener))
         return m_doc == imageEventListener->m_doc;
     return false;
 }
 
 } // namespace blink