PlzNavigate: Release StreamHandle.

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index c595af5eaa1ce9775cc1bcd2c25e9b0be49b5cea..4248e8b52fe451dfd0c2a34bac7d65d51abdae17 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -5134,6 +5134,18 @@ void RenderFrameImpl::OnCommitNavigation(
   stream_override->redirect_responses = request_params.redirect_response;
   stream_override->redirect_infos = request_params.redirect_infos;
 
+  // PlzNavigate: Notify the browser that it can released its |stream_handle_|

[clamy, 2017/06/12 15:15:47]

nit: no PlzNavigate needed (it's a full PlzNavigate function).
I would prefer the comment as:
// Used to notify the browser that it can release its... object isn't used
anymore.
TODO(clamy): Remove this when we switch to Mojo streams.

[arthursonzogni, 2017/06/13 09:21:48]

Done.

+  // when the |stream_override| object is no more used. This is a temporary
+  // solution until mojo is used.
+  stream_override->on_delete = base::BindOnce(
+      [](base::WeakPtr<RenderFrameImpl> weak_self, const GURL& url) {
+        if (RenderFrameImpl* self = weak_self.get()) {
+          self->Send(
+              new FrameHostMsg_StreamHandleConsumed(self->routing_id_, url));
+        }
+      },
+      weak_factory_.GetWeakPtr());
+
   if (commit_data.url_loader_factory.is_valid()) {
     // Chrome doesn't use interface versioning.
     url_loader_factory_.Bind(mojom::URLLoaderFactoryPtrInfo(