Set credentials mode "same-origin" when crossOrigin=anonymous is set.

third_party/WebKit/Source/core/dom/ScriptLoader.cpp

Index: third_party/WebKit/Source/core/dom/ScriptLoader.cpp
diff --git a/third_party/WebKit/Source/core/dom/ScriptLoader.cpp b/third_party/WebKit/Source/core/dom/ScriptLoader.cpp
index a7b90c6739fafc8dca761bb50c11c5a5d3962981..aca2cfcd1c2d3c133e15b89fa989e1d6749ee2fe 100644
--- a/third_party/WebKit/Source/core/dom/ScriptLoader.cpp
+++ b/third_party/WebKit/Source/core/dom/ScriptLoader.cpp
@@ -43,6 +43,7 @@
 #include "core/frame/SubresourceIntegrity.h"
 #include "core/frame/UseCounter.h"
 #include "core/frame/csp/ContentSecurityPolicy.h"
+#include "core/html/CrossOriginAttribute.h"
 #include "core/html/HTMLScriptElement.h"
 #include "core/html/imports/HTMLImport.h"
 #include "core/html/parser/HTMLParserIdioms.h"
@@ -290,9 +291,9 @@ bool ScriptLoader::fetchScript(const String& sourceUrl, FetchRequest::DeferOptio
     if (!stripLeadingAndTrailingHTMLSpaces(sourceUrl).isEmpty()) {
         FetchRequest request(ResourceRequest(elementDocument->completeURL(sourceUrl)), m_element->localName());
 
-        AtomicString crossOriginMode = m_element->fastGetAttribute(HTMLNames::crossoriginAttr);
-        if (!crossOriginMode.isNull())
-            request.setCrossOriginAccessControl(elementDocument->securityOrigin(), crossOriginMode);
+        CrossOriginAttributeValue crossOrigin = crossOriginAttributeValue(m_element->fastGetAttribute(HTMLNames::crossoriginAttr));
+        if (crossOrigin != CrossOriginAttributeNotSet)
+            request.setCrossOriginAccessControl(elementDocument->securityOrigin(), crossOrigin);
         request.setCharset(scriptCharset());
 
         bool scriptPassesCSP = elementDocument->contentSecurityPolicy()->allowScriptWithNonce(m_element->fastGetAttribute(HTMLNames::nonceAttr));