tools/perf/page_sets/tough_memory_multi_tab.json

{
  "description": "Mobile sites for exercising multi-tab memory issues",
  "archive_data_file": "data/key_mobile_sites.json",
  "credentials_path": "data/credentials.json",
  "user_agent_type": "mobile",
  "pages": [
    { "url": "https://www.google.com/#hl=en&q=barack+obama" },
    { "url": "http://theverge.com" },
    { "url": "http://techcrunch.com" }
  ]
}