Bumping gaia.json for 2 gaia-1_2 revision(s) a=gaia-bump

========

https://hg.mozilla.org/integration/gaia-1_2/rev/f8653964ec6f
Author: Diego Marcos <diego.marcos@gmail.com>
Desc: Merge pull request #13566 from dmarcos/bug931125v1.2

Bug 931125 - [Gallery] [Camera] We have to take into account the screen ...

========

https://hg.mozilla.org/integration/gaia-1_2/rev/fc8e86442b2f
Author: Diego Marcos <diego.marcos@gmail.com>
Desc: Bug 931125 - [Gallery] [Camera] We have to take into account the screen pixel ratio when checking if the thumbnail fills the screen