chore: import upstream snapshot with attribution

third_party/opencl_headers/BUILD

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+# copybara:uncomment package(default_applicable_licenses = ["//tensorflow:license"])

third_party/opencl_headers/opencl_headers.BUILD

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+# Description:
+#  OpenCL(TM) API Headers
+
+package(default_visibility = ["//visibility:public"])
+
+licenses(["notice"])
+
+exports_files(["LICENSE"])
+
+cc_library(
+    name = "opencl_headers",
+    hdrs = [
+        "CL/cl.h",
+        "CL/cl_d3d10.h",
+        "CL/cl_d3d11.h",
+        "CL/cl_dx9_media_sharing.h",
+        "CL/cl_egl.h",
+        "CL/cl_ext.h",
+        "CL/cl_ext_intel.h",
+        "CL/cl_gl.h",
+        "CL/cl_gl_ext.h",
+        "CL/cl_platform.h",
+        "CL/cl_va_api_media_sharing_intel.h",
+        "CL/cl_version.h",
+        "CL/opencl.h",
+    ],
+    includes = ["."],
+)

third_party/opencl_headers/workspace.bzl

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+"""Loads OpenCL-Headers, used by TF Lite."""
+
+load("//third_party:repo.bzl", "tf_http_archive", "tf_mirror_urls")
+
+def repo():
+    tf_http_archive(
+        name = "opencl_headers",
+        # LINT.IfChange
+        strip_prefix = "OpenCL-Headers-dcd5bede6859d26833cd85f0d6bbcee7382dc9b3",
+        sha256 = "ca8090359654e94f2c41e946b7e9d826253d795ae809ce7c83a7d3c859624693",
+        urls = tf_mirror_urls("https://github.com/KhronosGroup/OpenCL-Headers/archive/dcd5bede6859d26833cd85f0d6bbcee7382dc9b3.tar.gz"),
+        # LINT.ThenChange(//tensorflow/lite/tools/cmake/modules/opencl_headers.cmake)
+        build_file = "//third_party/opencl_headers:opencl_headers.BUILD",
+    )