Add HttpStreamFactory Job orphaning semantics.

net/http/http_stream_factory_impl_job.h

Index: net/http/http_stream_factory_impl_job.h
diff --git a/net/http/http_stream_factory_impl_job.h b/net/http/http_stream_factory_impl_job.h
index 5a8f0297663ec815143a96025a25a42bb7b6f965..b46664034dbf432cb6c5f8015aef808c3e632abc 100644
--- a/net/http/http_stream_factory_impl_job.h
+++ b/net/http/http_stream_factory_impl_job.h
@@ -57,6 +57,8 @@ class HttpStreamFactoryImpl::Job {
                                  const string16& password);
   LoadState GetLoadState() const;
 
+  void Orphan(const Request* request);
+
   bool was_alternate_protocol_available() const;
   bool was_npn_negotiated() const;
   bool using_spdy() const;
@@ -68,6 +70,9 @@ class HttpStreamFactoryImpl::Job {
   // Indicates whether or not this job is performing a preconnect.
   bool IsPreconnecting() const;
 
+  // Indicates whether or not this Job has been orphaned by a Request.
+  bool IsOrphaned() const;
+
  private:
   enum AlternateProtocolMode {
     kUnspecified,  // Unspecified, check HttpAlternateProtocols