mojo::Callback -> base::Callback

mojo/public/cpp/bindings/lib/connector.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "mojo/public/cpp/bindings/lib/connector.h"
 
 #include <stdint.h>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 321 matching lines @@
     message_pipe_ = std::move(dummy_pipe.handle0);
   } else {
     CancelWait();
   }
 
   if (force_async_handler) {
     if (!paused_)
       WaitToReadMore();
   } else {
     error_ = true;
-    connection_error_handler_.Run();
+    if (!connection_error_handler_.is_null())
+      connection_error_handler_.Run();
   }
 }
 
 void Connector::EnsureSyncWatcherExists() {
   if (sync_watcher_)
     return;
   sync_watcher_.reset(new SyncHandleWatcher(
       message_pipe_.get(), MOJO_HANDLE_SIGNAL_READABLE,
       base::Bind(&Connector::OnSyncHandleWatcherHandleReady,
                  base::Unretained(this))));
 }
 
 }  // namespace internal
 }  // namespace mojo