Revert of Net-related fixups for scoped_refptr conversion operator cleanup.

net/http/transport_security_persister.h

Index: net/http/transport_security_persister.h
diff --git a/net/http/transport_security_persister.h b/net/http/transport_security_persister.h
index 79a0d7a1aa9e6856c891c56f58d17843fe900332..7725ba124e603b19fd74c0181ebd5a655a4ce305 100644
--- a/net/http/transport_security_persister.h
+++ b/net/http/transport_security_persister.h
@@ -13,7 +13,7 @@
 // This means that it's possible for pages opened very quickly not to get the
 // correct transport security information.
 //
-// To load the state, we schedule a Task on background_runner, which
+// To load the state, we schedule a Task on file_task_runner, which
 // deserializes and configures the TransportSecurityState.
 //
 // The TransportSecurityState object supports running a callback function
@@ -51,17 +51,16 @@
 // Reads and updates on-disk TransportSecurity state. Clients of this class
 // should create, destroy, and call into it from one thread.
 //
-// background_runner is the task runner this class should use internally to
+// file_task_runner is the task runner this class should use internally to
 // perform file IO, and can optionally be associated with a different thread.
 class NET_EXPORT TransportSecurityPersister
     : public TransportSecurityState::Delegate,
       public base::ImportantFileWriter::DataSerializer {
  public:
-  TransportSecurityPersister(
-      TransportSecurityState* state,
-      const base::FilePath& profile_path,
-      const scoped_refptr<base::SequencedTaskRunner>& background_runner,
-      bool readonly);
+  TransportSecurityPersister(TransportSecurityState* state,
+                             const base::FilePath& profile_path,
+                             base::SequencedTaskRunner* file_task_runner,
+                             bool readonly);
   virtual ~TransportSecurityPersister();
 
   // Called by the TransportSecurityState when it changes its state.