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

========

https://hg.mozilla.org/integration/gaia-central/rev/f4de4fb20543
Author: Salvador de la Puente González <salva@unoyunodiez.com>
Desc: Merge pull request #14923 from TheoChevalier/Bug952805-usage-wifi-data-string-fix

Bug 952805 - [Usage][l12y] wifi-usage and mobile-usage are reused in dif...
r=me

========

https://hg.mozilla.org/integration/gaia-central/rev/5cabe242c227
Author: TheoChevalier <theo.chevalier11@gmail.com>
Desc: Bug 952805 - [Usage][l12y] wifi-usage and mobile-usage are reused in different contexts
No bug - Fix typo in CodeGenerator.cpp Emacs mode line. r=me DONTBUILD
bug 735577 - pt 1 - introduce mozilla::WritingMode and logical-coordinate Point/Size/Margin/Rect classes. r=smontagu
bug 735577 - pt 2 - add GetWritingMode() method to nsIFrame. r=smontagu
bug 735577 - pt 3.1 - make width/height/offset/margin fields in nsHTMLReflowState private, and provide accessor functions. r=smontagu
bug 735577 - pt 3.2 - update the rest of layout code to use the new accessors on nsHTMLReflowState. r=smontagu
bug 735577 - pt 3.3 - provide logical-coordinate APIs in nsHTMLReflowState, parallel to the existing physical APIs. r=smontagu
bug 735577 - pt 4.1 - use accessor functions for some physical-coordinate fields in nsHTMLReflowMetrics, in preparation for logicalization. r=smontagu
bug 735577 - pt 4.2 - convert width and height fields in nsHTMLReflowMetrics to logical coordinates. r=smontagu
Bug 952992 - Remove MPrepareCall and MPassArg instructions. r=nbp

--HG--
extra : rebase_source : 51c7d7a273a7e52e374fabec0793206bdba24c2c
Bug 952744 - Remove jsd_java. r=terrence
Bug 953284 - Remove JSOP_NOTEARG. r=jandem
Bug 938571 - Add discovery support for second-screen devices r=wesj
Bug 938571 - Add discovery support for second-screen devices (test) r=rnewman
Bug 953284 followup - Update trap offsets. r=me

--HG--
extra : rebase_source : 78f1b045973c8ac86cc6b93107fae577a29cae31
Merge b-i/m-i to m-c