Update from https://crrev.com/320343

gpu/command_buffer/client/BUILD.gn

Index: gpu/command_buffer/client/BUILD.gn
diff --git a/gpu/command_buffer/client/BUILD.gn b/gpu/command_buffer/client/BUILD.gn
index 7e47f2437963dee2edbd61cb8ba53a944ac6094c..23d5a8c14cc49812bd53422651e115c4d65f906e 100644
--- a/gpu/command_buffer/client/BUILD.gn
+++ b/gpu/command_buffer/client/BUILD.gn
@@ -197,3 +197,23 @@ component("gles2_c_lib") {
     "//gpu/command_buffer/common",
   ]
 }
+
+# GYP version: gpu/gpu.gyp:gles2_c_lib_nocheck
+# Same as gles2_c_lib except with no parameter checking. Required for
+# OpenGL ES 2.0 conformance tests.
+component("gles2_c_lib_nocheck") {
+  sources = gles2_c_lib_source_files
+
+  defines = [
+    "GLES2_C_LIB_IMPLEMENTATION",
+    "GLES2_CONFORMANCE_TESTS=1",
+  ]
+  deps = [
+    ":client",
+    ":gles2_implementation_no_check",
+    ":gles2_interface",
+    "//base",
+    "//base/third_party/dynamic_annotations",
+    "//gpu/command_buffer/common",
+  ]
+}