PlzNavigate: Release StreamHandle.

content/child/web_url_loader_impl.cc

Index: content/child/web_url_loader_impl.cc
diff --git a/content/child/web_url_loader_impl.cc b/content/child/web_url_loader_impl.cc
index acd699d37d54cedb4f76fb1e7e756eaa2130948e..ab0411e398e03a0fd8d8c2d63f0072269960cd5f 100644
--- a/content/child/web_url_loader_impl.cc
+++ b/content/child/web_url_loader_impl.cc
@@ -13,6 +13,7 @@
 #include <vector>
 
 #include "base/bind.h"
+#include "base/callback.h"
 #include "base/debug/dump_without_crashing.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
@@ -348,7 +349,10 @@ void SetSecurityStyleAndDetails(const GURL& url,
 }  // namespace
 
 StreamOverrideParameters::StreamOverrideParameters() {}
-StreamOverrideParameters::~StreamOverrideParameters() {}
+StreamOverrideParameters::~StreamOverrideParameters() {
+  if (on_delete)
+    std::move(on_delete).Run(stream_url);
+}
 
 // This inner class exists since the WebURLLoader may be deleted while inside a
 // call to WebURLLoaderClient.  Refcounting is to keep the context from being