DurationChangeCB  145 content/renderer/media/android/media_source_delegate.cc     const DurationChangeCB& duration_change_cb) {
DurationChangeCB   68 content/renderer/media/android/media_source_delegate.h       const DurationChangeCB& duration_change_cb);
DurationChangeCB  188 content/renderer/media/android/media_source_delegate.h   DurationChangeCB duration_change_cb_;