KEEP_LIVE_WITH_HEADROOM 140 chrome/browser/renderer_host/web_cache_manager.h KEEP_LIVE_WITH_HEADROOM, KEEP_LIVE_WITH_HEADROOM 88 chrome/browser/renderer_host/web_cache_manager_unittest.cc KEEP_LIVE_WITH_HEADROOM = WebCacheManager::KEEP_LIVE_WITH_HEADROOM,