Teach the preload scanner about the 'nonce' attribute.

third_party/WebKit/Source/core/html/parser/HTMLPreloadScanner.cpp

Index: third_party/WebKit/Source/core/html/parser/HTMLPreloadScanner.cpp
diff --git a/third_party/WebKit/Source/core/html/parser/HTMLPreloadScanner.cpp b/third_party/WebKit/Source/core/html/parser/HTMLPreloadScanner.cpp
index 14ecba3af799fc287ea7b8df14d276a57f7e19fe..09e657f9aa8888892779c69314f82f0629107f1a 100644
--- a/third_party/WebKit/Source/core/html/parser/HTMLPreloadScanner.cpp
+++ b/third_party/WebKit/Source/core/html/parser/HTMLPreloadScanner.cpp
@@ -243,6 +243,7 @@ public:
         ReferrerPolicy referrerPolicy = (m_referrerPolicy != ReferrerPolicyDefault) ? m_referrerPolicy : documentReferrerPolicy;
         std::unique_ptr<PreloadRequest> request = PreloadRequest::create(initiatorFor(m_tagImpl), position, m_urlToLoad, predictedBaseURL, type, referrerPolicy, resourceWidth, clientHintsPreferences, requestType);
         request->setCrossOrigin(m_crossOrigin);
+        request->setNonce(m_nonce);
         request->setCharset(charset());
         request->setDefer(m_defer);
         request->setIntegrityMetadata(m_integrityMetadata);
@@ -258,6 +259,8 @@ private:
             setUrlToLoad(attributeValue, DisallowURLReplacement);
         else if (match(attributeName, crossoriginAttr))
             setCrossOrigin(attributeValue);
+        else if (match(attributeName, nonceAttr))
+            setNonce(attributeValue);
         else if (match(attributeName, asyncAttr))
             setDefer(FetchRequest::LazyLoad);
         else if (match(attributeName, deferAttr))
@@ -315,6 +318,8 @@ private:
             m_matched &= mediaAttributeMatches(*m_mediaValues, attributeValue);
         } else if (match(attributeName, crossoriginAttr)) {
             setCrossOrigin(attributeValue);
+        } else if (match(attributeName, nonceAttr)) {
+            setNonce(attributeValue);
         } else if (match(attributeName, asAttr)) {
             m_asAttributeValue = attributeValue;
         } else if (match(attributeName, typeAttr)) {
@@ -448,6 +453,11 @@ private:
         m_crossOrigin = crossOriginAttributeValue(corsSetting);
     }
 
+    void setNonce(const String& nonce)
+    {
+        m_nonce = nonce;
+    }
+
     void setDefer(FetchRequest::DeferOption defer)
     {
         m_defer = defer;
@@ -475,6 +485,7 @@ private:
     bool m_sourceSizeSet;
     FetchRequest::DeferOption m_defer;
     CrossOriginAttributeValue m_crossOrigin;
+    String m_nonce;
     Member<MediaValuesCached> m_mediaValues;
     bool m_referrerPolicySet;
     ReferrerPolicy m_referrerPolicy;