Add use counter for ineligible Subresource Integrity use

Source/core/frame/SubresourceIntegrity.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "core/frame/SubresourceIntegrity.h"
 
 #include "core/HTMLNames.h"
 #include "core/dom/Document.h"
 #include "core/dom/Element.h"
@@ skipping 96 matching lines @@
 {
     if (!RuntimeEnabledFeatures::subresourceIntegrityEnabled())
         return true;
 
     Document& document = element.document();
     String attribute = element.fastGetAttribute(HTMLNames::integrityAttr);
     if (attribute.isEmpty())
         return true;
 
     if (!resource.isEligibleForIntegrityCheck(document.securityOrigin())) {
+        UseCounter::count(document, UseCounter::SRIElementIntegrityAttributeButIneligible);
         logErrorToConsole("Subresource Integrity: The resource '" + resourceUrl.elidedString() + "' has an integrity attribute, but the resource requires the request to be CORS enabled to check the integrity, and it is not. The resource has not been blocked, but no integrity check occurred.", document);
         return true;
     }
 
     WTF::Vector<IntegrityMetadata> metadataList;
     IntegrityParseResult integrityParseResult = parseIntegrityAttribute(attribute, metadataList, document);
     // On failed parsing, there's no need to log an error here, as
     // parseIntegrityAttribute() will output an appropriate console message.
     if (integrityParseResult != IntegrityParseValidResult)
         return true;
@@ skipping 194 matching lines @@
         metadataList.append(integrityMetadata);
     }
 
     if (metadataList.size() == 0 && error)
         return IntegrityParseNoValidResult;
 
     return IntegrityParseValidResult;
 }
 
 } // namespace blink