INSTALL_CAUSE_UPDATE  859 chrome/browser/extensions/crx_installer.cc     install_cause_ = extension_misc::INSTALL_CAUSE_UPDATE;
INSTALL_CAUSE_UPDATE  628 chrome/browser/extensions/extension_service.cc   installer->set_install_cause(extension_misc::INSTALL_CAUSE_UPDATE);
INSTALL_CAUSE_UPDATE  589 chrome/browser/performance_monitor/performance_monitor.cc           installer->install_cause() == extension_misc::INSTALL_CAUSE_UPDATE) {
INSTALL_CAUSE_UPDATE  676 chrome/browser/policy/policy_browsertest.cc     installer->set_install_cause(extension_misc::INSTALL_CAUSE_UPDATE);