Revert of Integers can now be passed as uniforms (patchset #1 id:1 of https://coderev...

Revert of Integers can now be passed as uniforms (patchset #1 id:1 of https://codereview.chromium.org/2076143003/ )

Reason for revert:
Compile failures on Vulkan platforms (eg https://build.chromium.org/p/client.skia.compile/builders/Build-Ubuntu-GCC-Arm7-Debug-Android_Vulkan)

Original issue's description:
> Integers can now be passed as uniforms; needed for passing color count to fragment shader
>
> BUG=skia:
> GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2076143003
>
> Committed: https://skia.googlesource.com/skia/+/cc3a22b369e1a60fa2acf2987f2934baf7c4b198

TBR=tomhudson@google.com,bsalomon@google.com,fmenozzi@google.com
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=skia:

Review-Url: https://codereview.chromium.org/2080133002