mozilla-b2g/gaia — pull request #16148 by davidflanagan (2014-02-10 23:18:16+00:00)
Title: Bug 963917: reduce Gallery memory use (and fix leak) while scanning

force software canvases for thumbnail and preview creation with willReadFrequently

Free canvas memory after creating a thumbnail

Make sure our thumbnail blobs are file-backed not memory-backed

update mediadb docs