Comment 10 for bug 1232575

That is, all patches applied, except for any webapps patches, get no crash. With this stripped-down "4" patch, crash

[2121:2121:1011/172215:INFO:CONSOLE(279)] "Content script: Base content script, started on url: http://boards.4chan.org/s/", source: chrome-extension://pmoflmbbcfgacopiikdcpmbiellfihdg/base-content-script.js (279)

[2121:2121:1011/172215:INFO:CONSOLE(0)] "chrome.extension is not available: 'extension' is not allowed for specified context type content script, extension page, web page, etc.).", source: http://boards.4chan.org/s/ (0)
[9:9:1011/172215:WARNING:console.cc(163)] Could not log "(CONTENT_SCRIPT context for cellaaeoekimmemgdheibaibbaoeefbl) lastError:48: Uncaught TypeError: Cannot convert undefined or null to object{TypeError: Cannot convert undefined or null to object
    at Object.clear (lastError:48:24)
    at sendRequest:80:64
    at Array.forEach (native)
    at Function.target.(anonymous function) (extensions::SafeBuiltins:19:14)
    at handleResponse (sendRequest:80:12)}": no context given