disable fetches for parser blocking scripts inserted via doc.write

third_party/WebKit/Source/core/frame/Settings.in

Index: third_party/WebKit/Source/core/frame/Settings.in
diff --git a/third_party/WebKit/Source/core/frame/Settings.in b/third_party/WebKit/Source/core/frame/Settings.in
index 37e9c23fade531fba407805573652eb5a85098bb..579393097293a6f5416faf3e8954b4b94710f3d9 100644
--- a/third_party/WebKit/Source/core/frame/Settings.in
+++ b/third_party/WebKit/Source/core/frame/Settings.in
@@ -379,5 +379,9 @@ fetchIncreaseAsyncScriptPriority initial=false
 # as soon as possible for something currently on the screen.
 fetchIncreasePriorities initial=false
 
+# Whether to disallow network fetches for parser blocking scripts in the main
+# frame inserted via document.write.
+disallowFetchForDocWrittenScriptsInMainFrame initial=false
+
 # The autoplay gesture override experiment is described in crbug.com/487345 .
 autoplayExperimentMode type=String, initial="off"