Don't lower priority for scripts inserted by doc.write

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

Index: third_party/WebKit/Source/core/html/parser/HTMLPreloadScanner.h
diff --git a/third_party/WebKit/Source/core/html/parser/HTMLPreloadScanner.h b/third_party/WebKit/Source/core/html/parser/HTMLPreloadScanner.h
index d5936afdf3efaaecf92d5f12d80087907b3f8487..9971f77b66f8a3c9cae62bc217589bd0e2fc37c5 100644
--- a/third_party/WebKit/Source/core/html/parser/HTMLPreloadScanner.h
+++ b/third_party/WebKit/Source/core/html/parser/HTMLPreloadScanner.h
@@ -82,9 +82,12 @@ class TokenPreloadScanner {
   USING_FAST_MALLOC(TokenPreloadScanner);
 
  public:
+  enum class ScannerType { kMainDocument, kInsertion };
+
   TokenPreloadScanner(const KURL& document_url,
                       std::unique_ptr<CachedDocumentParameters>,
-                      const MediaValuesCached::MediaValuesCachedData&);
+                      const MediaValuesCached::MediaValuesCachedData&,
+                      const ScannerType);
   ~TokenPreloadScanner();
 
   void Scan(const HTMLToken&,
@@ -162,6 +165,7 @@ class TokenPreloadScanner {
   std::unique_ptr<CachedDocumentParameters> document_parameters_;
   Persistent<MediaValuesCached> media_values_;
   ClientHintsPreferences client_hints_preferences_;
+  ScannerType scanner_type_;
 
   bool did_rewind_ = false;
 
@@ -177,11 +181,11 @@ class CORE_EXPORT HTMLPreloadScanner {
       const HTMLParserOptions& options,
       const KURL& document_url,
       std::unique_ptr<CachedDocumentParameters> document_parameters,
-      const MediaValuesCached::MediaValuesCachedData&
-          media_values_cached_data) {
+      const MediaValuesCached::MediaValuesCachedData& media_values_cached_data,
+      const TokenPreloadScanner::ScannerType scanner_type) {
     return WTF::WrapUnique(new HTMLPreloadScanner(
         options, document_url, std::move(document_parameters),
-        media_values_cached_data));
+        media_values_cached_data, scanner_type));
   }
 
   ~HTMLPreloadScanner();
@@ -194,7 +198,8 @@ class CORE_EXPORT HTMLPreloadScanner {
   HTMLPreloadScanner(const HTMLParserOptions&,
                      const KURL& document_url,
                      std::unique_ptr<CachedDocumentParameters>,
-                     const MediaValuesCached::MediaValuesCachedData&);
+                     const MediaValuesCached::MediaValuesCachedData&,
+                     const TokenPreloadScanner::ScannerType);
 
   TokenPreloadScanner scanner_;
   SegmentedString source_;