[Merge] lp:~fboucault/camera-app/camera-app-gridlines into lp:camera-app

[Florian Boucault]

> Other problems:
> 1) first time you launch the app you see the gridlines briefly visible until
> the viewfinder is initialized

Fixed.

> 2) on N4, the grid lines are not aligned properly with the viewfinder, they
> start at the left edge of the screen, not on the left edge of the viewfinder.

Fixed.

> And they don't expand all the way to the right edge of the viewfinder.
> 3) switching to front camera with gridlines on will make the gridlines
> disappear until you tap on the screen
> 4) same problem when switching back to back camera

Both 3) and 4) are exactly https://bugs.launchpad.net/camera-app/+bug/1373607
Not a new bug unfortunately.
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https://code.launchpad.net/~fboucault/camera-app/camera-app-gridlines/+merge/243421
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