Mark conformance/extensions/angle-instanced-arrays.html failing.

content/test/gpu/gpu_tests/webgl_conformance_expectations.py

 # Copyright (c) 2013 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.
 import os
 
 from gpu_tests.gpu_test_expectations import GpuTestExpectations
 
 # See the GpuTestExpectations class for documentation.
 
 class WebGLConformanceExpectations(GpuTestExpectations):
@@ skipping 203 matching lines @@
     # Two flaky tests.
     self.Fail('conformance/ogles/GL/functions/functions_049_to_056.html',
         ['lion', 'intel'], bug=393331)
     self.Fail('conformance/extensions/webgl-compressed-texture-size-limit.html',
         ['lion', 'intel'], bug=393331)
 
     # Linux failures
     # NVIDIA
     self.Fail('conformance/textures/misc/default-texture.html',
         ['linux', ('nvidia', 0x104a)], bug=422152)
-    self.Flaky('conformance/extensions/angle-instanced-arrays.html',
-               ['linux', 'nvidia'], bug=544989)
+    self.Fail('conformance/extensions/angle-instanced-arrays.html',
+              ['linux', 'nvidia'], bug=544989) # Too flaky to retry
     self.Flaky('conformance/extensions/oes-element-index-uint.html',
                ['linux', 'nvidia'], bug=524144)
     # AMD Radeon 5450
     self.Fail('conformance/programs/program-test.html',
         ['linux', ('amd', 0x68f9)], bug=436212)
     self.Fail('conformance/rendering/multisample-corruption.html',
         ['linux', ('amd', 0x68f9)], bug=436212)
     self.Fail('conformance/textures/misc/default-texture.html',
         ['linux', ('amd', 0x68f9)], bug=436212)
     self.Fail('conformance/textures/video/' +
@@ skipping 245 matching lines @@
     self.Fail('conformance/textures/misc/texture-npot.html',
         ['chromeos', ('intel', 0xa011)], bug=375554)
     self.Fail('conformance/textures/misc/texture-npot-video.html',
         ['chromeos', ('intel', 0xa011)], bug=375554)
     self.Fail('conformance/textures/misc/texture-size.html',
         ['chromeos', ('intel', 0xa011)], bug=375554)
     self.Fail('conformance/uniforms/gl-uniform-arrays.html',
         ['chromeos', ('intel', 0xa011)], bug=375554)
     self.Skip('conformance/uniforms/uniform-default-values.html',
         ['chromeos', ('intel', 0xa011)], bug=375554)