DevTools: show styles for shadow dom elements

Source/core/inspector/InspectorCSSAgent.cpp

 /*
  * Copyright (C) 2010, 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:
  * 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 860 matching lines @@
     new EnableResourceClient(this, styleSheetsToFetch, prpCallback);
 }
 
 void InspectorCSSAgent::wasEnabled(PassRefPtr<EnableCallback> callback)
 {
     if (!m_state->getBoolean(CSSAgentState::cssAgentEnabled)) {
         // We were disabled while fetching resources.
         return;
     }
 
-    // Re-read stylesheets, we know for sure we have content for all of them.
     Vector<InspectorStyleSheet*> styleSheets;
     collectAllStyleSheets(styleSheets);
     for (size_t i = 0; i < styleSheets.size(); ++i)
         m_frontend->styleSheetAdded(styleSheets.at(i)->buildObjectForStyleSheetInfo());
+
+    // More styleSheetAdded events will be generated below.
+    m_instrumentingAgents->setInspectorCSSAgent(this);
+    Vector<Document*> documents = m_domAgent->documents();
+    for (Vector<Document*>::iterator it = documents.begin(); it != documents.end(); ++it)
+        (*it)->styleEngine()->updateActiveStyleSheets(FullStyleUpdate);
+
     if (callback)
         callback->sendSuccess();
-
-    m_instrumentingAgents->setInspectorCSSAgent(this);
 }
 
 void InspectorCSSAgent::disable(ErrorString*)
 {
     m_instrumentingAgents->setInspectorCSSAgent(0);
     m_state->setBoolean(CSSAgentState::cssAgentEnabled, false);
 }
 
 void InspectorCSSAgent::didCommitLoad(Frame* frame, DocumentLoader* loader)
 {
@@ skipping 987 matching lines @@
             documentsToChange.add(element->ownerDocument());
     }
 
     m_nodeIdToForcedPseudoState.clear();
     for (HashSet<Document*>::iterator it = documentsToChange.begin(), end = documentsToChange.end(); it != end; ++it)
         (*it)->setNeedsStyleRecalc();
 }
 
 } // namespace WebCore