Disable warnings-as-error in GLSLTest.

This disables the warnings in the FragData test. We were
getting errors in Debug from the multithreading compile
implementation.

Bug: chromium:931294
Change-Id: I6d1424e54335534f794884e40f527b5464113084
Reviewed-on: https://chromium-review.googlesource.com/c/1465960
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>
diff --git a/src/tests/gl_tests/GLSLTest.cpp b/src/tests/gl_tests/GLSLTest.cpp
index 62ece18..42fcadf 100644
--- a/src/tests/gl_tests/GLSLTest.cpp
+++ b/src/tests/gl_tests/GLSLTest.cpp
@@ -5120,7 +5120,8 @@
 TEST_P(GLSLTest, FragData)
 {
     // Ensures that we don't regress and emit Vulkan layer warnings.
-    treatPlatformWarningsAsErrors();
+    // TODO(http://crbug.com/931294): Fix worker context warnings.
+    // treatPlatformWarningsAsErrors();
 
     constexpr char kFS[] = R"(void main() { gl_FragData[0] = vec4(1, 0, 0, 1); })";
     ANGLE_GL_PROGRAM(program, essl1_shaders::vs::Simple(), kFS);