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

Source/core/html/HTMLLinkElement.cpp

Index: Source/core/html/HTMLLinkElement.cpp
diff --git a/Source/core/html/HTMLLinkElement.cpp b/Source/core/html/HTMLLinkElement.cpp
index 0907d5b7d6b11032046d6bbcf719ed833770d176..d1521e84305cf64fe79ef8fe0c7dfb4a74f4a6ff 100644
--- a/Source/core/html/HTMLLinkElement.cpp
+++ b/Source/core/html/HTMLLinkElement.cpp
@@ -743,9 +743,10 @@ void LinkStyle::process()
         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(true);

[Mike West, 2015/03/26 04:41:08]

Nit: We should totally change this bool to an enum. It makes no sense without
checking the header. :/

[jww, 2015/03/26 21:04:17]

Done.

         }
     } else if (m_sheet) {
         // we no longer contain a stylesheet, e.g. perhaps rel or type was changed