Bumping gaia.json for 4 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/94d69fc80746
Author: Jose M. Cantera <jmcanterafonseca@gmail.com>
Desc: Merge pull request #19992 from jmcanterafonseca/contacts_negative

Bug 1019954 - [B2G][Contacts][Outlook/Gmail] Importing then deleting con...

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https://hg.mozilla.org/integration/gaia-central/rev/facbb1519f03
Author: Jose M. Cantera <jmcanterafonseca@gmail.com>
Desc: Bug 1019954 - [B2G][Contacts][Outlook/Gmail] Importing then deleting contacts from Outlook/Gmail reports negative number of contacts found

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https://hg.mozilla.org/integration/gaia-central/rev/e36755077e7d
Author: Dominic Kuo <dkuo@mozilla.com>
Desc: Merge pull request #19720 from dominickuo/bug-1004542

Bug 1004542 - [BB] Add :focus style to the header buttons, r=rnowm

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https://hg.mozilla.org/integration/gaia-central/rev/f0bb2395d72f
Author: Dominic Kuo <dkuo@mozilla.com>
Desc: Bug 1004542 - [BB] Add :focus style to the header buttons
Bumping manifests a=b2g-bump