Tag string bitmaps (for GMs) as sRGB

These are often used as inputs when testing image filters, and we need
tagged inputs to test the color pipeline. To avoid changing legacy mode
results, rasterize the bitmaps in legacy, but tag the output.

BUG=skia:

Change-Id: I55e2c0e0061b3f50b1caa18c19ba4fcf92cdf902
Reviewed-on: https://skia-review.googlesource.com/6280
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Brian Osman <brianosman@google.com>
1 file changed