Suppress the whole shaderoperator suite on Mac NVIDIA.

Enough of these tests are flaky on this bot that we should just use a
wildcard suppression. This bot is not expected to pass WebGL 2.0
conformance.

Bug: 756537
Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win_optional_gpu_tests_rel
Change-Id: I824d00e5f05bc42b119baa8089ef2cb81f0675a1
Tbr: rjkroege@chromium.org
Tbr: zmo@chromium.org
Reviewed-on: https://chromium-review.googlesource.com/1054360Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
Reviewed-by: Zhenyao Mo <zmo@chromium.org>
Commit-Queue: Yuly Novikov <ynovikov@chromium.org>
Cr-Commit-Position: refs/heads/master@{#558416}

content/test/gpu/gpu_tests/webgl2_conformance_expectations.py

@@ -603,11 +603,7 @@ class WebGL2ConformanceExpectations(WebGLConformanceExpectations):
         ['mac', ('nvidia', 0xfe9)], bug=795052)
 
     # When these fail on this configuration, they fail multiple times in a row.
-    self.Fail('deqp/functional/gles3/shaderoperator/binary_operator_01.html',
-        ['mac', 'nvidia'], bug=756537)
-    self.Fail('deqp/functional/gles3/shaderoperator/common_functions.html',
-        ['mac', 'nvidia'], bug=756537)
-    self.Fail('deqp/functional/gles3/shaderoperator/unary_operator_01.html',
+    self.Fail('deqp/functional/gles3/shaderoperator/*',
         ['mac', 'nvidia'], bug=756537)
 
     # Mac AMD