Bug 990435 - [tarako] the two homescreens randomly overlapped with each other after wake up from sleep
Bug 988037 - [B2G][Video] WebM videos attached in email do not display properly when previewed in email app
Bug 949941 - [Camera] Replace all memory-backed Blob instances with disk-backed File instances after saving to disk so "pick" activity consumers don't break. r=djf, a=blocking-b2g=1.3T+ on bug 988749 (e-mail bug for tracking purposes)

This is a manual uplift of https://github.com/mozilla-b2g/gaia/pull/17136 from
bug 949941.  It is blocking-b2g=1.3T+ on bug 988749 which is a bug that solely
exists to track the uplift work in the e-mail app.

Initial uplift work was performed by bkelly and that work reviewed/confirmed by asuth.
Merge pull request #17940 from asutherland/camera-file-blob-v1.3t

Bug 949941 - [Camera] Replace all memory-backed Blob instances with disk-backed File instances after saving to disk so "pick" activity consumers don't break. r=djf, a=blocking-b2g=1.3T+ on bug 988749 (e-mail bug for tracking purposes)
Merge pull request #17892 from cctuan/990435

Bug 990435 - [tarako] the two homescreens randomly overlapped with each ...
Merge pull request #17931 from russnicoletti/bug988037

Bug 988037 - [B2G][Video] WebM videos attached in email do not display properly when previewed in email app r=johu
Merge branch 'v1.3' into v1.3t
window.js DEBUG=true
Possible fix to visibility state
Don't restart home screen if we have visible attention screen
Monitor restart count during the total test and the past 1 min
Add more log to investigate two homescreen div problem