Re-enable a webgl conformance test.

The bug in conformance_textures_texture_draw_with_2d_and_cube has been fixed
after we roll in khronos ToT webgl conformance.

BUG=391951
TEST=gpu bots
TBR=kbr@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/380533002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@281976 0039d316-1c4b-4281-b951-d872f2087c98

content/test/gpu/gpu_tests/webgl_conformance_expectations.py

@@ -27,8 +27,6 @@ class WebGLConformanceExpectations(test_expectations.TestExpectations):
     # Fails on all platforms
     self.Fail('conformance/glsl/misc/shaders-with-mis-matching-uniforms.html',
         bug=351396)
-    self.Fail('conformance/textures/texture-draw-with-2d-and-cube.html',
-        bug=391951)
     self.Fail('conformance/renderbuffers/framebuffer-object-attachment.html',
         ['win', 'linux', 'android', 'chromeos'], bug=391953)