Mark webgl2 conformance test as flaky

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 108 matching lines @@
     self.Fail('conformance2/textures/webgl_canvas/tex-image-and-sub-image-2d' +
         '-with-webgl-canvas-rgb5_a1-rgba-unsigned_short_5_5_5_1.html',
         ['win'], bug=483282)
     self.Fail('conformance2/textures/webgl_canvas/tex-image-and-sub-image-2d' +
         '-with-webgl-canvas-rgba4-rgba-unsigned_byte.html',
         ['win'], bug=483282)
     self.Fail('conformance2/textures/webgl_canvas/tex-image-and-sub-image-2d' +
         '-with-webgl-canvas-rgba4-rgba-unsigned_short_4_4_4_4.html',
         ['win'], bug=483282)
 
+    self.Flaky('deqp/functional/gles3/buffercopy.html', ['win'], bug=587601)
+
     self.Skip('deqp/functional/gles3/readpixel.html', ['win'], bug=483282)
     self.Skip('deqp/functional/gles3/texturestatequery.html',
         ['win'], bug=483282)
     self.Fail('deqp/functional/gles3/shaderstruct.html',
         ['win'], bug=483282)
     self.Fail('conformance2/glsl3/array-in-complex-expression.html',
         ['win'], bug=483282)
     self.Fail('conformance2/reading/read-pixels-from-fbo-test.html',
         ['win'], bug=483282)
     self.Skip('conformance2/reading/read-pixels-pack-parameters.html',
@@ skipping 259 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'])