Bug 889847 - Fix for intermittent browser_webconsole_bug_613013_console_api_iframe.js | Timed out while waiting for: console.log() message; r=me
Bug 852421 - Remove MarkTypeObjectUnknownProperties call from Object.create. r=bhackett

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extra : rebase_source : efbc9855ea3b548838b7c2b74feac3db987814e5