Embed TinyRGB color profile when JPG EXIF Color Space = sRGB but no profile embedded

Embed TinyRGB color profile when JPG EXIF Color Space = sRGB but no profile embedded

Existing srgb.jpg & tinyrgb.jpg have been replaced to be able to
easily compare a "fixed" missingprofile.jpg to tinyrgb.jpg.
With the existing files, when the tinyrgb profile was added to
missingprofile.jpg, it would end up basically the same as tinyrgb.jpg,
except that not all the exif data would be in the exact same order.
I've rebuilt srgb.jpg & tinyrgb.jpg by first removing their profile
(which is what missingprofile.jpg is), and then copying it over again:
    exiftool -tagsfromfile srgb.jpg -ICC_Profile new_srgb.jpg

Meanwhile also moved the profile-swapping code to JpegHandler, as it
was jpeg-specific.

Bug: T134498
Change-Id: I722dd6f66f6007182ad9a215e5eb382776983c05