CheckExtensionInstalledObserver  970 chrome/browser/apps/app_browsertest.cc   CheckExtensionInstalledObserver should_install;
CheckExtensionInstalledObserver 1004 chrome/browser/apps/app_browsertest.cc   CheckExtensionInstalledObserver should_not_install;
CheckExtensionInstalledObserver 1034 chrome/browser/apps/app_browsertest.cc   CheckExtensionInstalledObserver should_install;