Add unit test for glsl-construct-vec-mat-index's expectations.

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_test_expectations import GpuTestExpectations
 
 # See the GpuTestExpectations class for documentation.
 
 class WebGLConformanceExpectations(GpuTestExpectations):
@@ skipping 27 matching lines @@
         bug=478572)
     self.Fail('conformance/misc/expando-loss.html',
         bug=485634)
 
     # Win failures
     self.Fail('conformance/glsl/bugs/' +
               'pow-of-small-constant-in-user-defined-function.html',
         ['win'], bug=485641)
     self.Fail('conformance/glsl/bugs/sampler-struct-function-arg.html',
         ['win'], bug=485642)
-    self.Flaky('conformance/glsl/constructors/' +
-               'glsl-construct-vec-mat-index.html',
-               ['win'], bug=525188)
+    self.Fail('conformance/glsl/constructors/' +
+              'glsl-construct-vec-mat-index.html',
+              ['win'], bug=525188)
 
     # Win7 / Intel failures
     self.Fail('conformance/rendering/gl-scissor-test.html',
         ['win7', 'intel'], bug=314997)
     self.Fail('conformance/context/premultiplyalpha-test.html',
         ['win7', 'intel'])
     self.Fail('conformance/textures/misc/copy-tex-image-and-sub-image-2d.html',
         ['win7', 'intel'])
     self.Fail('conformance/rendering/gl-viewport-test.html',
         ['win7', 'intel'], bug=372511)
@@ skipping 595 matching lines @@
         ['linux', 'amd'], bug=483282)
     self.Skip('deqp/functional/gles3/shaderswitch.html',
         ['linux', 'nvidia'], bug=483282)
 
     self.Fail('conformance2/glsl3/vector-dynamic-indexing.html',
         ['linux'], bug=483282)
     self.Fail('conformance2/rendering/draw-buffers.html',
         ['linux'], bug=483282)
     self.Fail('conformance2/samplers/samplers.html',
         ['linux'], bug=483282)