Revert of Move uils and sksl to a common sources GYP file. (patchset #1 id:1 of https://codereview.chromium.org/2302723005/ )

Reason for revert:
The broke the PDFium build. See

https://build.chromium.org/p/client.skia.compile/builders/Build-Ubuntu-GCC-x86_64-Release-PDFium/builds/2094

Original issue's description:
> Move uils and sksl to a common sources GYP file.
>
> This is for the coalescing of sources in one GYP file to improve GN runtime. If
> this is successful, the other sources lists will also be merged into this one
> file.
>
> Inlines "../src" and "../include" for skia_source_dir and skia_include_dir. Evaluating these with GYP's variable expansion is annoying since I think another layer of nesting is required. Coding these explicitly is also more clear. This used to be required because Chromium would reference these .gypi files directly with a different path, but this no longer happens.
>
> Removes the chromium defines gypi which is no longer referenced.
>
> GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2302723005
>
> Committed: https://skia.googlesource.com/skia/+/39f7a10a04a914384944d8bf62621144ac4eeaa3

TBR=mtklein@chromium.org,brettw@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.

Review-Url: https://codereview.chromium.org/2317683002

0 files changed, 0 insertions, 0 deletions