Disable the WebGL2 test basic_copyteximage2d on mac.

content/test/gpu/gpu_tests/webgl2_conformance_expectations.py

 # Copyright (c) 2015 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 from gpu_tests.webgl_conformance_expectations import WebGLConformanceExpectations
 
 # See the GpuTestExpectations class for documentation.
 
 class WebGL2ConformanceExpectations(WebGLConformanceExpectations):
   def __init__(self, conformance_path):
     super(WebGL2ConformanceExpectations, self).__init__(conformance_path)
@@ skipping 200 matching lines @@
     self.Fail('deqp/functional/gles3/texturefiltering/cube_formats_*',
         ['mac'], bug=606074)
     self.Fail('deqp/functional/gles3/texturefiltering/cube_sizes_*',
         ['mac'], bug=606074)
     self.Fail('deqp/functional/gles3/texturefiltering/cube_combinations_*',
         ['mac'], bug=606074)
     self.Flaky('deqp/functional/gles3/shaderindexing/varying.html',
         ['mac'], bug=619264)
     self.Fail('deqp/functional/gles3/shaderloop_do_while.html',
         ['mac'], bug=617820)
+    self.Fail('deqp/functional/gles3/texturespecification/' +
+        'basic_copyteximage2d.html',
+        ['mac'], bug=620067)
     # This one's flaky on AMD, NVIDIA and Intel GPUs, but the
     # GPU-specific expectations aren't working properly.
     self.Fail('deqp/functional/gles3/shaderpackingfunction.html',
         ['mac'], bug=619264)
     self.Fail('deqp/functional/gles3/uniformbuffers/random.html',
         ['mac'], bug=618464)
 
     self.Fail('deqp/functional/gles3/textureformat/unsized_2d_array.html',
         ['mac'], bug=577144)
     self.Fail('deqp/functional/gles3/textureformat/unsized_3d.html',
@@ skipping 437 matching lines @@
     # self.Fail(page_name,
     #     ['linux', ('nvidia', 0x1), 'debug', 'opengl'])
     # self.Fail(page_name,
     #     ['win', ('nvidia', 0x1), 'debug', 'opengl'])
 
     # Conflicts if between a generic os condition and a specific version
     # self.Fail(page_name,
     #     ['xp', ('nvidia', 0x1), 'debug', 'opengl'])
     # self.Fail(page_name,
     #     ['win', ('nvidia', 0x1), 'debug', 'opengl'])