4. Do not call Dispose() as ClassicPendingScript's prefinalizer

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

Index: third_party/WebKit/Source/core/dom/ClassicPendingScript.cpp
diff --git a/third_party/WebKit/Source/core/dom/ClassicPendingScript.cpp b/third_party/WebKit/Source/core/dom/ClassicPendingScript.cpp
index e1c747e4e89d3a3c93f5b5fbca2ec03ba70c4d6c..4ab6c71f21acde2a6f8127d44d7721042da053c8 100644
--- a/third_party/WebKit/Source/core/dom/ClassicPendingScript.cpp
+++ b/third_party/WebKit/Source/core/dom/ClassicPendingScript.cpp
@@ -47,8 +47,11 @@ NOINLINE void ClassicPendingScript::CheckState() const {
   CHECK(!streamer_ || streamer_->GetResource() == GetResource());
 }
 
-NOINLINE void ClassicPendingScript::Dispose() {
-  PendingScript::Dispose();
+void ClassicPendingScript::Prefinalize() {
+  // TODO(hiroshige): Consider moving this to ScriptStreamer's prefinalizer.

[kouhei (in TOK), 2017/04/26 00:22:52]

Maybe dtor is enough.

[haraken, 2017/04/26 01:06:23]

Agreed.

+  // https://crbug.com/715309
+  if (streamer_)
+    streamer_->Cancel();
   prefinalizer_called_ = true;
 }