DevTools: Track CSSStyleSheetHeaders in the front-end real time

Source/core/dom/DocumentStyleSheetCollection.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2008, 2009, 2011, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) Research In Motion Limited 2010-2011. All rights reserved.
@@ skipping 461 matching lines @@
         if (styleResolverUpdateType == Reset) {
             styleResolver->ruleSets().resetAuthorStyle();
             styleResolver->appendAuthorStyleSheets(0, activeCSSStyleSheets);
         } else {
             ASSERT(styleResolverUpdateType == Additive);
             styleResolver->appendAuthorStyleSheets(m_activeAuthorStyleSheets.size(), activeCSSStyleSheets);
         }
         resetCSSFeatureFlags();
     }
     m_activeAuthorStyleSheets.swap(activeCSSStyleSheets);
+    InspectorInstrumentation::activeStyleSheetsUpdated(m_document, activeStyleSheets);
     m_styleSheetsForStyleSheetList.swap(activeStyleSheets);
 
     m_usesRemUnits = styleSheetsUseRemUnits(m_activeAuthorStyleSheets);
     m_needsUpdateActiveStylesheetsOnStyleRecalc = false;
 
     m_document->notifySeamlessChildDocumentsOfStylesheetUpdate();
 
     return requiresFullStyleRecalc;
 }
 
 void DocumentStyleSheetCollection::reportMemoryUsage(MemoryObjectInfo* memoryObjectInfo) const
 {
     MemoryClassInfo info(memoryObjectInfo, this, WebCoreMemoryTypes::DOM);
     info.addMember(m_pageUserSheet, "pageUserSheet");
     info.addMember(m_injectedUserStyleSheets, "injectedUserStyleSheets");
     info.addMember(m_injectedAuthorStyleSheets, "injectedAuthorStyleSheets");
     info.addMember(m_userStyleSheets, "userStyleSheets");
     info.addMember(m_authorStyleSheets, "authorStyleSheets");
     info.addMember(m_activeAuthorStyleSheets, "activeAuthorStyleSheets");
     info.addMember(m_styleSheetsForStyleSheetList, "styleSheetsForStyleSheetList");
     info.addMember(m_styleSheetCandidateNodes, "styleSheetCandidateNodes");
     info.addMember(m_preferredStylesheetSetName, "preferredStylesheetSetName");
     info.addMember(m_selectedStylesheetSetName, "selectedStylesheetSetName");
     info.addMember(m_document, "document");
 }
 
 }