Fire error events for a variety of script and style failures.

Source/core/html/HTMLLinkElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Rob Buis (rwlbuis@gmail.com)
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 347 matching lines @@
 {
     dispatchEvent(Event::create(EventTypeNames::webkitprerenderdomcontentloaded));
 }
 
 bool HTMLLinkElement::sheetLoaded()
 {
     ASSERT(linkStyle());
     return linkStyle()->sheetLoaded();
 }
 
-void HTMLLinkElement::notifyLoadedSheetAndAllCriticalSubresources(bool errorOccurred)
+void HTMLLinkElement::notifyLoadedSheetAndAllCriticalSubresources(LoadedSheetErrorStatus errorStatus)
 {
     ASSERT(linkStyle());
-    linkStyle()->notifyLoadedSheetAndAllCriticalSubresources(errorOccurred);
+    linkStyle()->notifyLoadedSheetAndAllCriticalSubresources(errorStatus);
 }
 
 void HTMLLinkElement::dispatchPendingLoadEvents()
 {
     linkLoadEventSender().dispatchPendingEvents();
 }
 
 void HTMLLinkElement::dispatchPendingEvent(LinkEventSender* eventSender)
 {
     ASSERT_UNUSED(eventSender, eventSender == &linkLoadEventSender());
@@ skipping 127 matching lines @@
 void LinkStyle::setCSSStyleSheet(const String& href, const KURL& baseURL, const String& charset, const CSSStyleSheetResource* cachedStyleSheet)
 {
     if (!m_owner->inDocument()) {
         ASSERT(!m_sheet);
         return;
     }
 
     if (!cachedStyleSheet->errorOccurred() && !SubresourceIntegrity::CheckSubresourceIntegrity(*m_owner, cachedStyleSheet->sheetText(), KURL(baseURL, href), cachedStyleSheet->mimeType(), *cachedStyleSheet)) {
         m_loading = false;
         removePendingSheet();
-        notifyLoadedSheetAndAllCriticalSubresources(true);
+        notifyLoadedSheetAndAllCriticalSubresources(Node::ErrorOccurredLoadingSubresource);
         return;
     }
 
     // Completing the sheet load may cause scripts to execute.
     RefPtrWillBeRawPtr<Node> protector(m_owner.get());
 
     CSSParserContext parserContext(m_owner->document(), 0, baseURL, charset);
 
     if (RefPtrWillBeRawPtr<StyleSheetContents> restoredSheet = const_cast<CSSStyleSheetResource*>(cachedStyleSheet)->restoreParsedStyleSheet(parserContext)) {
         ASSERT(restoredSheet->isCacheable());
@@ skipping 33 matching lines @@
 
 bool LinkStyle::sheetLoaded()
 {
     if (!styleSheetIsLoading()) {
         removePendingSheet();
         return true;
     }
     return false;
 }
 
-void LinkStyle::notifyLoadedSheetAndAllCriticalSubresources(bool errorOccurred)
+void LinkStyle::notifyLoadedSheetAndAllCriticalSubresources(Node::LoadedSheetErrorStatus errorStatus)
 {
     if (m_firedLoad)
         return;
-    m_loadedSheet = !errorOccurred;
+    m_loadedSheet = (errorStatus == Node::NoErrorLoadingSubresource);
     if (m_owner)
         m_owner->scheduleEvent();
     m_firedLoad = true;
 }
 
 void LinkStyle::startLoadingDynamicSheet()
 {
     ASSERT(m_pendingSheetType < Blocking);
     addPendingSheet(Blocking);
 }
@@ skipping 148 matching lines @@
         // Load stylesheets that are not needed for the rendering immediately with low priority.
         FetchRequest request = builder.build(blocking);
         AtomicString crossOriginMode = m_owner->fastGetAttribute(HTMLNames::crossoriginAttr);
         if (!crossOriginMode.isNull()) {
             request.setCrossOriginAccessControl(document().securityOrigin(), crossOriginMode);
             setFetchFollowingCORS();
         }
         setResource(document().fetcher()->fetchCSSStyleSheet(request));
 
         if (!resource()) {
-            // The request may have been denied if (for example) the stylesheet is local and the document is remote.
+            // The request may have been denied if (for example) the stylesheet is local and the document is remote, or if there was a Content Security Policy Failure.
             m_loading = false;
             removePendingSheet();
+            notifyLoadedSheetAndAllCriticalSubresources(Node::ErrorOccurredLoadingSubresource);
         }
     } else if (m_sheet) {
         // we no longer contain a stylesheet, e.g. perhaps rel or type was changed
         RefPtrWillBeRawPtr<StyleSheet> removedSheet = m_sheet.get();
         clearSheet();
         document().removedStyleSheet(removedSheet.get());
     }
 }
 
 void LinkStyle::setSheetTitle(const String& title)
@@ skipping 11 matching lines @@
         removePendingSheet();
 }
 
 DEFINE_TRACE(LinkStyle)
 {
     visitor->trace(m_sheet);
     LinkResource::trace(visitor);
 }
 
 } // namespace blink