PruneAllButLastCommittedInternal 1287 content/browser/frame_host/navigation_controller_impl.cc   PruneAllButLastCommittedInternal();
PruneAllButLastCommittedInternal 1354 content/browser/frame_host/navigation_controller_impl.cc   PruneAllButLastCommittedInternal();
PruneAllButLastCommittedInternal  319 content/browser/frame_host/navigation_controller_impl.h   void PruneAllButLastCommittedInternal();