WebGL: Mark half float test flaky on Win/AMD.

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 131 matching lines @@
               'copy-tex-image-and-sub-image-2d.html',
               ['win7', 'intel'])
 
     # Win / AMD flakiness seen on new tryservers.
     # It's unfortunate that this suppression needs to be so broad, but
     # basically any test that uses readPixels is potentially flaky, and
     # it's infeasible to suppress individual failures one by one.
     self.Flaky('conformance/*', ['win', ('amd', 0x6779)], bug=491419)
 
     # Win AMD failures
+    # This test is probably flaky on all AMD, but only visible on the
+    # new AMD (the whole test suite is flaky on the old config).
+    self.Flaky('conformance/extensions/oes-texture-half-float.html',
+              ['win', ('amd', 0x6613)], bug=653533)
 
     # Win / AMD D3D9 failures
     self.Fail('conformance/extensions/angle-instanced-arrays.html',
         ['win', 'amd', 'd3d9'], bug=475095)
     self.Fail('conformance/rendering/more-than-65536-indices.html',
         ['win', 'amd', 'd3d9'], bug=475095)
 
     # Win / D3D9 failures
     # Skipping these two tests because they're causing assertion failures.
     self.Skip('conformance/extensions/oes-texture-float-with-canvas.html',
@@ skipping 560 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)