Bug 931918 - Part 0: tidying and logging. r=bnicholson
Bug 931918 - Part 1: don't store JAR-sourced icons in the DB. r=bnicholson
Bug 931918 - Part 2: check affinity between favicon fetches and their view. r=bnicholson
Bug 931918 - Part 3: rework failure case handling in download. r=bnicholson
Bug 926430 - Part 4: fix pinning and other DB use to correctly handle update-or-insert. r=bnicholson
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Update robocop test.
Bug 926430 - Part 5: fetch catched favicons on the UI thread. r=bnicholson