Bug 977611 - Use instance storage if it has enough space. r=catlee
Merging from default

changeset:   1628:737717bc8af1
tag:         tip
parent:      1626:05a068cb1553
user:        Massimo Gervasini <mgervasini@mozilla.com>
date:        Tue Apr 15 15:53:24 2014 +0200
summary:     Bug 977611 - Use instance storage if it has enough space. r=catlee

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branch : production