added initial GLSL support to skslc

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2185393003

Review-Url: https://codereview.chromium.org/2185393003
diff --git a/public.bzl b/public.bzl
index 5734888..36896f7 100644
--- a/public.bzl
+++ b/public.bzl
@@ -435,7 +435,7 @@
         "tests/PathOpsSkpClipTest.cpp",  # Alternate main.
         "tests/skia_test.cpp",  # Old main.
         "tests/SkpSkGrTest.cpp",  # Alternate main.
-        "tests/SkSLErrorTest.cpp",  # Excluded along with Vulkan.
+        "tests/SkSL*.cpp",  # Excluded along with Vulkan.
         "tests/SVGDeviceTest.cpp",
         "tools/gpu/gl/angle/*",
         "tools/gpu/gl/command_buffer/*",