Don't enable shader extenstions in WebGL 2 when they are already core.

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 61 matching lines @@
     self.Skip('deqp/functional/gles3/textureshadow.html', bug=483282)
     self.Skip('deqp/functional/gles3/texturespecification*.html', bug=483282)
     self.Skip('deqp/functional/gles3/texturewrap.html', bug=483282)
     self.Skip('deqp/functional/gles3/transformfeedback.html', bug=483282)
     self.Skip('deqp/functional/gles3/uniformapi.html', bug=483282)
     self.Skip('deqp/functional/gles3/uniformbuffers.html', bug=483282)
     self.Skip('deqp/functional/gles3/vertexarrays.html', bug=483282)
 
     self.Fail('conformance2/glsl3/array-complex-indexing.html', bug=483282)
     self.Fail('conformance2/glsl3/forbidden-operators.html', bug=483282)
-    self.Fail('conformance2/extensions/promoted-extensions-in-shaders.html',
-        bug=295792)
     self.Fail('conformance2/samplers/sampler-drawing-test.html', bug=483282)
     self.Fail('conformance2/state/gl-object-get-calls.html', bug=483282)
     # Note that this test fails on ['win', 'intel'] with bug=483282
     self.Fail('conformance2/buffers/uniform-buffers.html', bug=577368)
 
-    # Windows and Mac.
+    # Windows only.
     self.Fail('conformance2/textures/canvas/tex-image-and-sub-image-2d' +
         '-with-canvas-r8-red-unsigned_byte.html',
         ['win'], bug=483282)
     self.Fail('conformance2/textures/canvas/tex-image-and-sub-image-2d' +
         '-with-canvas-rg8-rg-unsigned_byte.html',
         ['win'], bug=483282)
     self.Fail('conformance2/textures/canvas/tex-image-and-sub-image-2d' +
         '-with-canvas-rgb8-rgb-unsigned_byte.html',
         ['win'], bug=483282)
     self.Fail('conformance2/textures/canvas/tex-image-and-sub-image-2d' +
@@ skipping 90 matching lines @@
     self.Fail('conformance2/textures/webgl_canvas/tex-image-and-sub-image-3d' +
         '-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-3d' +
         '-with-webgl-canvas-rgba4-rgba-unsigned_byte.html',
         ['win'], bug=483282)
     self.Fail('conformance2/textures/webgl_canvas/tex-image-and-sub-image-3d' +
         '-with-webgl-canvas-rgba4-rgba-unsigned_short_4_4_4_4.html',
         ['win'], bug=483282)
 
-    # Windows only.
     self.Skip('deqp/functional/gles3/readpixel.html', ['win'], bug=483282)
     self.Skip('deqp/functional/gles3/texturestatequery.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',
         ['win'], bug=483282)
     self.Fail('conformance2/textures/misc/gl-get-tex-parameter.html',
@@ skipping 203 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'])